Adaptive Performance Tweaks

The Adaptive Performance Tweaks mod automatically adjust specific settings on the server to allow a better TPS/FPS.

70K загрузок44 подписчиковMITfabricforgeneoforgequilt

Обновлён 5 июля 2026 г. · опубликован 9 декабря 2023 г.

Скачать 12.6.0(423 КБ)

Adaptive Performance Tweaks (APTweaks)

Adaptive Performance Tweaks

⚠️ 12.x is the current unified release line. Older docs or setup guides may still describe the legacy 11.x multi-module layout.

💾 Back up your world and config files before updating. 12.x is still a early-release and some configuration details may change between releases.

📝 Known limitations before stable release There is no in-game config GUI yet. 12.x currently uses a config-first workflow, and larger servers will usually need some spawn tuning beyond the defaults.

🔄 Upgrading from 11.x? Remove all old APTweaks module jars before installing 12.x. Do not mix 11.x and 12.x files in the same mods/ folder.

Adaptive Performance Tweaks is a server-side optimization mod for Forge, Fabric, and NeoForge. It watches Minecraft's server-side load and adjusts selected systems automatically to reduce lag pressure on dedicated servers, single-player worlds, and LAN-open worlds.

That means APTweaks is not only for public or dedicated servers. It can also help in normal client worlds, because single-player and LAN sessions still run the same server-side systems for spawning, ticking, gamerules, items, XP orbs, and simulation distance.

Instead of asking you to assemble separate modules, 12.x bundles the major feature groups in one mod:

Spawn control and spawn presets
Game rule adaptation
Item, XP orb, and arrow cleanup
Player login and beginner protection
Adaptive simulation distance with movement-aware throttling
Optional advanced throttles for AI, chunk generation, and view distance
Monitoring and benchmarking tools

🎥 Introduction and Overview Video

What APTweaks is good at ✨

APTweaks helps most when performance problems are caused by:

too many mobs or repeated spawn attempts
large amounts of dropped items, XP orbs, or stuck arrows
overloaded exploration and chunk generation
worlds or servers that need softer automatic reactions instead of permanent hard limits

APTweaks is especially useful for:

dedicated servers that need adaptive protection under changing player load
modpacks with heavy entity pressure
single-player worlds with farms, exploration, or too much dropped loot
LAN worlds where the host machine struggles with the integrated server load

It is less helpful for issues that come mainly from:

heavy redstone or machine logic
one specific broken mod or entity
world corruption or storage bottlenecks

Quick start 🚀

Remove any old 11.x APTweaks jars from mods/.
Install APTweaks 12.x via the CurseForge or Modrinth launcher. Manual install: download the jar for your loader from one of those pages and place it in mods/.
Start the game, world, or server once.
Review the generated files in config/adaptive_performance_tweaks/.
Leave defaults on for a first test run before tuning anything.
If you run a larger server, review spawn limits early. The fallback spawn defaults are tuned for about 4 players.

Spawn presets are loaded from:

config/adaptive_performance_tweaks/spawn_presets/
data/<namespace>/aptweaks/spawn_presets/

If you want to customize presets, start with the templates and examples in wiki/SpawnPresets.

Feature overview 🧩

Feature	What it does
Spawn	Limits mob pressure with load-aware checks, view-area logic, and configurable presets
Game Rules	Adjusts selected gamerules when the server gets stressed
Items	Merges or removes excess dropped items
Experience Orbs	Clusters XP orbs to lower entity counts
Arrows	Cleans up stuck arrows without touching active projectiles
Player Protection	Protects players during login and helps newer or listed players
Simulation Distance	Lowers simulation cost automatically under load and can temporarily throttle harder during heavy exploration
View Distance	Optional advanced safety valve for heavy servers
AI Throttling	Optional advanced slowdown for far-away mob AI
Chunk Gen Throttle	Optional advanced slowdown for chunk generation work
Monitoring	Optional log-based visibility into load and entity pressure
Benchmark	Built-in scenario-based baseline/active measurement suite for real worlds, servers, and modpacks

Simulation Distance stays load-aware as before, but can now also clamp down harder during heavy exploration at MEDIUM+ load and then recover gradually after players stop moving or finish logging in.

Commands 🔧

The main command root is /aptweaks.

Useful commands include:

/aptweaks status
/aptweaks load
/aptweaks stats
/aptweaks stats items
/aptweaks stats xp_orbs
/aptweaks stats arrows
/aptweaks stats reset
/aptweaks entities overview
/aptweaks feature <id> <true|false>
/aptweaks playerPositions
/aptweaks kill all_dropped_items
/aptweaks reload
/aptweaks debug
/aptweaks benchmark
/aptweaks benchmark start
/aptweaks benchmark start scenario <general|items|xp|entities|recovery>

If something feels wrong, run these four commands first:

/aptweaks status
/aptweaks load
/aptweaks stats
/aptweaks debug <module> true

Reload note:

/aptweaks reload reloads the .cfg files
spawn preset JSON changes are safer with vanilla /reload or a restart
feature on/off changes may still require a restart to take full effect

Learn more 📚

The wiki is the main 12.x documentation:

Версии

Версия	Канал	Игра	Загрузчики	Дата	Скачать
12.6.0	Релиз	26.2	fabric, quilt	5 июля 2026 г.	Скачать (423 КБ)
12.6.0	Релиз	26.2	forge	5 июля 2026 г.	Скачать (417 КБ)
12.6.0	Релиз	26.2	neoforge	5 июля 2026 г.	Скачать (417 КБ)
12.6.0	Релиз	26.1.2	forge	5 июля 2026 г.	Скачать (417 КБ)
12.6.0	Релиз	26.1.2	neoforge	5 июля 2026 г.	Скачать (417 КБ)
12.6.0	Релиз	26.1.2	fabric, quilt	5 июля 2026 г.	Скачать (429 КБ)
12.6.0	Релиз	1.21.11	forge	5 июля 2026 г.	Скачать (417 КБ)
12.6.0	Релиз	1.21.11	fabric, quilt	5 июля 2026 г.	Скачать (422 КБ)
12.6.0	Релиз	1.21.11	neoforge	5 июля 2026 г.	Скачать (417 КБ)
12.6.0	Релиз	1.21.1	fabric, quilt	5 июля 2026 г.	Скачать (463 КБ)
12.6.0	Релиз	1.21.1	neoforge	5 июля 2026 г.	Скачать (456 КБ)
12.6.0	Релиз	1.21.1	forge, neoforge	5 июля 2026 г.	Скачать (456 КБ)
12.6.0	Релиз	1.20.1	fabric, quilt	5 июля 2026 г.	Скачать (460 КБ)
12.6.0	Релиз	1.20.1	forge, neoforge	5 июля 2026 г.	Скачать (458 КБ)
12.5.0	Релиз	26.2	fabric, quilt	20 июня 2026 г.	Скачать (425 КБ)

Показаны последние 15 из 110 версий.

Ченджлог

12.6.0Релиз26.2 · 5 июля 2026 г.

Changelog for Adaptive Performance Tweaks 26.2

Note

This change log includes the summarized changes. For the full changelog, please go to the GitHub History instead.

12.6.0

Fixed item merge losing the remainder when a drop only partially fits a nearby stack.
Fixed arrow cleanup removing thrown tridents and pickup-able player arrows; protected projectiles now use a separate hard cap (tridents removed last).
Fixed game rules not being restored on shutdown, persisting optimized values (randomTickSpeed, doFireTick, ...) into level.dat and corrupting the baseline on restart.
Fixed /aptweaks feature not applying enable/disable transitions (stale view/simulation distance and game rules).
Fixed monitoringIntervalSeconds=0 silencing monitoring instead of logging on load changes.
Fixed dimensions.ignore in spawn presets falling back to global limits instead of exempting it.
Fixed server load rising-check comparing against a two-cycles-old measurement.
Fixed login protection clearing invisibility/invulnerability set by game modes or other mods.
Added entity tag support (#namespace:tag) in spawn preset allow/deny lists.
Added protection for named/enchanted/NBT items in world/type limits with a 2x hard cap.
Added wiring for minOptimizationLoadLevel in simulation distance and game rules.
Added validation for core load thresholds and damage reduction percentages.
Improved AI throttling to skip only goal/navigation/sensing, keeping physics, item pickup and despawning intact.
Improved game-rule movement warmup to work without an active distance feature.
Improved config reload to log mod conflict warnings only once.
Improved entity tracking report to write asynchronously and mob-farm cleanup to use live entity positions.
Improved benchmark heap metric: GC-collapsed measurements now report "n/a (GC)" instead of a misleading 0KB delta.
Removed unused NeoForge-style mixin entries from the Forge mods.toml.

12.5.0

Fixed benchmark report not covering all features and adjustments.
Added Exploration scenario and update benchmark scenarios.
Improved simulation distance features and set default to AUTO with better load-based adjustments.

12.4.0

Added player warmup for simulation distance and random tick speed on login, teleport and fast movement.
Added config toggles for login and movement warmup independent of minOptimizationLoadLevel.
Improved load-based simulation distance changes with step-by-step reductions.
Improved warmup recovery to only restore values below normal server load.
Improved reset handling and tests for restoring server default values.

12.3.0

Added more detailed MSPT buckets and improved reporting.
Added smaller performance optimizations and removed some redundant code.
Added additional benchmark scenarios for better performance analysis and optimization.
Improved benchmark reporting and save result to file.
Improved entity report and store results outside of config folder.
Improved memory usage and reduced string concatenation in maps.

12.2.0

Fixed #89 compatibility for many popular mods with special entities.
Fixed #88 and #84 by providing NeoForge version and fixed related issues.
Fixed #49 Ars Nouveau mob spawn handling and compatibility.
Fixed benchmark crashes with chunk optimization mods.
Fixed features are not completely disabled and downgrading benchmark phase 2 results.
Fixed the incorrect Forge "missing on client" log message on clients.
Added entity exclusion metadata (mod, category, reason) and entity tracking reports.
Added more third-party compatibility checks.
Added stuck arrow cleanup.
Added spawn-type-based handling for structures, chunk generation, reinforcements...
Added movement-aware simulation distance throttling.
Added more spawn presets for known mods and entities.
Added the missing "Eco Stack Manager" integration for the 12.x feature set.
Added unit and game tests for the new features and optimizations.
Improved benchmark measurement accuracy and result presentation.
Improved logging, server load summaries, and stats output while reducing noisy output.

12.1.0

Fixed issue with server load measurement per world was not accurate enough.
Fixed smaller memory leak in the server load measurement code.
Fixed log spam issue with auto-detected mods.
Fixed Forge Mixin issue with missing mixin configuration file.
Added auto-benchmarking tools for better performance analysis and optimization.
Improved stats command to provide more detailed information about server load and performance.
Improved Fabric performance by optimizing existing code to Fabric entity pipeline.

12.0.0 🚀

Next major alpha release with refactored code and improved performance. Now available for Fabric, Forge and NeoForge with a single codebase and better maintainability.

12.6.0Релиз26.2 · 5 июля 2026 г.

Changelog for Adaptive Performance Tweaks 26.2

Note

This change log includes the summarized changes. For the full changelog, please go to the GitHub History instead.

12.6.0

Fixed item merge losing the remainder when a drop only partially fits a nearby stack.
Fixed arrow cleanup removing thrown tridents and pickup-able player arrows; protected projectiles now use a separate hard cap (tridents removed last).
Fixed game rules not being restored on shutdown, persisting optimized values (randomTickSpeed, doFireTick, ...) into level.dat and corrupting the baseline on restart.
Fixed /aptweaks feature not applying enable/disable transitions (stale view/simulation distance and game rules).
Fixed monitoringIntervalSeconds=0 silencing monitoring instead of logging on load changes.
Fixed dimensions.ignore in spawn presets falling back to global limits instead of exempting it.
Fixed server load rising-check comparing against a two-cycles-old measurement.
Fixed login protection clearing invisibility/invulnerability set by game modes or other mods.
Added entity tag support (#namespace:tag) in spawn preset allow/deny lists.
Added protection for named/enchanted/NBT items in world/type limits with a 2x hard cap.
Added wiring for minOptimizationLoadLevel in simulation distance and game rules.
Added validation for core load thresholds and damage reduction percentages.
Improved AI throttling to skip only goal/navigation/sensing, keeping physics, item pickup and despawning intact.
Improved game-rule movement warmup to work without an active distance feature.
Improved config reload to log mod conflict warnings only once.
Improved entity tracking report to write asynchronously and mob-farm cleanup to use live entity positions.
Improved benchmark heap metric: GC-collapsed measurements now report "n/a (GC)" instead of a misleading 0KB delta.
Removed unused NeoForge-style mixin entries from the Forge mods.toml.

12.5.0

Fixed benchmark report not covering all features and adjustments.
Added Exploration scenario and update benchmark scenarios.
Improved simulation distance features and set default to AUTO with better load-based adjustments.

12.4.0

Added player warmup for simulation distance and random tick speed on login, teleport and fast movement.
Added config toggles for login and movement warmup independent of minOptimizationLoadLevel.
Improved load-based simulation distance changes with step-by-step reductions.
Improved warmup recovery to only restore values below normal server load.
Improved reset handling and tests for restoring server default values.

12.3.0

Added more detailed MSPT buckets and improved reporting.
Added smaller performance optimizations and removed some redundant code.
Added additional benchmark scenarios for better performance analysis and optimization.
Improved benchmark reporting and save result to file.
Improved entity report and store results outside of config folder.
Improved memory usage and reduced string concatenation in maps.

12.2.0

Fixed #89 compatibility for many popular mods with special entities.
Fixed #88 and #84 by providing NeoForge version and fixed related issues.
Fixed #49 Ars Nouveau mob spawn handling and compatibility.
Fixed benchmark crashes with chunk optimization mods.
Fixed features are not completely disabled and downgrading benchmark phase 2 results.
Fixed the incorrect Forge "missing on client" log message on clients.
Added entity exclusion metadata (mod, category, reason) and entity tracking reports.
Added more third-party compatibility checks.
Added stuck arrow cleanup.
Added spawn-type-based handling for structures, chunk generation, reinforcements...
Added movement-aware simulation distance throttling.
Added more spawn presets for known mods and entities.
Added the missing "Eco Stack Manager" integration for the 12.x feature set.
Added unit and game tests for the new features and optimizations.
Improved benchmark measurement accuracy and result presentation.
Improved logging, server load summaries, and stats output while reducing noisy output.

12.1.0

Fixed issue with server load measurement per world was not accurate enough.
Fixed smaller memory leak in the server load measurement code.
Fixed log spam issue with auto-detected mods.
Fixed Forge Mixin issue with missing mixin configuration file.
Added auto-benchmarking tools for better performance analysis and optimization.
Improved stats command to provide more detailed information about server load and performance.
Improved Fabric performance by optimizing existing code to Fabric entity pipeline.

12.0.0 🚀

Next major alpha release with refactored code and improved performance. Now available for Fabric, Forge and NeoForge with a single codebase and better maintainability.

12.6.0Релиз26.2 · 5 июля 2026 г.

Changelog for Adaptive Performance Tweaks 26.2

Note

This change log includes the summarized changes. For the full changelog, please go to the GitHub History instead.

12.6.0

Fixed item merge losing the remainder when a drop only partially fits a nearby stack.
Fixed arrow cleanup removing thrown tridents and pickup-able player arrows; protected projectiles now use a separate hard cap (tridents removed last).
Fixed game rules not being restored on shutdown, persisting optimized values (randomTickSpeed, doFireTick, ...) into level.dat and corrupting the baseline on restart.
Fixed /aptweaks feature not applying enable/disable transitions (stale view/simulation distance and game rules).
Fixed monitoringIntervalSeconds=0 silencing monitoring instead of logging on load changes.
Fixed dimensions.ignore in spawn presets falling back to global limits instead of exempting it.
Fixed server load rising-check comparing against a two-cycles-old measurement.
Fixed login protection clearing invisibility/invulnerability set by game modes or other mods.
Added entity tag support (#namespace:tag) in spawn preset allow/deny lists.
Added protection for named/enchanted/NBT items in world/type limits with a 2x hard cap.
Added wiring for minOptimizationLoadLevel in simulation distance and game rules.
Added validation for core load thresholds and damage reduction percentages.
Improved AI throttling to skip only goal/navigation/sensing, keeping physics, item pickup and despawning intact.
Improved game-rule movement warmup to work without an active distance feature.
Improved config reload to log mod conflict warnings only once.
Improved entity tracking report to write asynchronously and mob-farm cleanup to use live entity positions.
Improved benchmark heap metric: GC-collapsed measurements now report "n/a (GC)" instead of a misleading 0KB delta.
Removed unused NeoForge-style mixin entries from the Forge mods.toml.

12.5.0

Fixed benchmark report not covering all features and adjustments.
Added Exploration scenario and update benchmark scenarios.
Improved simulation distance features and set default to AUTO with better load-based adjustments.

12.4.0

Added player warmup for simulation distance and random tick speed on login, teleport and fast movement.
Added config toggles for login and movement warmup independent of minOptimizationLoadLevel.
Improved load-based simulation distance changes with step-by-step reductions.
Improved warmup recovery to only restore values below normal server load.
Improved reset handling and tests for restoring server default values.

12.3.0

Added more detailed MSPT buckets and improved reporting.
Added smaller performance optimizations and removed some redundant code.
Added additional benchmark scenarios for better performance analysis and optimization.
Improved benchmark reporting and save result to file.
Improved entity report and store results outside of config folder.
Improved memory usage and reduced string concatenation in maps.

12.2.0

Fixed #89 compatibility for many popular mods with special entities.
Fixed #88 and #84 by providing NeoForge version and fixed related issues.
Fixed #49 Ars Nouveau mob spawn handling and compatibility.
Fixed benchmark crashes with chunk optimization mods.
Fixed features are not completely disabled and downgrading benchmark phase 2 results.
Fixed the incorrect Forge "missing on client" log message on clients.
Added entity exclusion metadata (mod, category, reason) and entity tracking reports.
Added more third-party compatibility checks.
Added stuck arrow cleanup.
Added spawn-type-based handling for structures, chunk generation, reinforcements...
Added movement-aware simulation distance throttling.
Added more spawn presets for known mods and entities.
Added the missing "Eco Stack Manager" integration for the 12.x feature set.
Added unit and game tests for the new features and optimizations.
Improved benchmark measurement accuracy and result presentation.
Improved logging, server load summaries, and stats output while reducing noisy output.

12.1.0

Fixed issue with server load measurement per world was not accurate enough.
Fixed smaller memory leak in the server load measurement code.
Fixed log spam issue with auto-detected mods.
Fixed Forge Mixin issue with missing mixin configuration file.
Added auto-benchmarking tools for better performance analysis and optimization.
Improved stats command to provide more detailed information about server load and performance.
Improved Fabric performance by optimizing existing code to Fabric entity pipeline.

12.0.0 🚀

Next major alpha release with refactored code and improved performance. Now available for Fabric, Forge and NeoForge with a single codebase and better maintainability.

12.6.0Релиз26.1.2 · 5 июля 2026 г.

Changelog for Adaptive Performance Tweaks 26.1.2

Note

This change log includes the summarized changes. For the full changelog, please go to the GitHub History instead.

12.6.0

Fixed item merge losing the remainder when a drop only partially fits a nearby stack.
Fixed arrow cleanup removing thrown tridents and pickup-able player arrows; protected projectiles now use a separate hard cap (tridents removed last).
Fixed game rules not being restored on shutdown, persisting optimized values (randomTickSpeed, doFireTick, ...) into level.dat and corrupting the baseline on restart.
Fixed /aptweaks feature not applying enable/disable transitions (stale view/simulation distance and game rules).
Fixed monitoringIntervalSeconds=0 silencing monitoring instead of logging on load changes.
Fixed dimensions.ignore in spawn presets falling back to global limits instead of exempting it.
Fixed server load rising-check comparing against a two-cycles-old measurement.
Fixed login protection clearing invisibility/invulnerability set by game modes or other mods.
Added entity tag support (#namespace:tag) in spawn preset allow/deny lists.
Added protection for named/enchanted/NBT items in world/type limits with a 2x hard cap.
Added wiring for minOptimizationLoadLevel in simulation distance and game rules.
Added validation for core load thresholds and damage reduction percentages.
Improved AI throttling to skip only goal/navigation/sensing, keeping physics, item pickup and despawning intact.
Improved game-rule movement warmup to work without an active distance feature.
Improved config reload to log mod conflict warnings only once.
Improved entity tracking report to write asynchronously and mob-farm cleanup to use live entity positions.
Improved benchmark heap metric: GC-collapsed measurements now report "n/a (GC)" instead of a misleading 0KB delta.
Removed unused NeoForge-style mixin entries from the Forge mods.toml.

12.5.0

Fixed benchmark report not covering all features and adjustments.
Added Exploration scenario and update benchmark scenarios.
Improved simulation distance features and set default to AUTO with better load-based adjustments.

12.4.0

Added player warmup for simulation distance and random tick speed on login, teleport and fast movement.
Added config toggles for login and movement warmup independent of minOptimizationLoadLevel.
Improved load-based simulation distance changes with step-by-step reductions.
Improved warmup recovery to only restore values below normal server load.
Improved reset handling and tests for restoring server default values.

12.3.0

Added more detailed MSPT buckets and improved reporting.
Added smaller performance optimizations and removed some redundant code.
Added additional benchmark scenarios for better performance analysis and optimization.
Improved benchmark reporting and save result to file.
Improved entity report and store results outside of config folder.
Improved memory usage and reduced string concatenation in maps.

12.2.0

Fixed #89 compatibility for many popular mods with special entities.
Fixed #88 and #84 by providing NeoForge version and fixed related issues.
Fixed #49 Ars Nouveau mob spawn handling and compatibility.
Fixed benchmark crashes with chunk optimization mods.
Fixed features are not completely disabled and downgrading benchmark phase 2 results.
Fixed the incorrect Forge "missing on client" log message on clients.
Added entity exclusion metadata (mod, category, reason) and entity tracking reports.
Added more third-party compatibility checks.
Added stuck arrow cleanup.
Added spawn-type-based handling for structures, chunk generation, reinforcements...
Added movement-aware simulation distance throttling.
Added more spawn presets for known mods and entities.
Added the missing "Eco Stack Manager" integration for the 12.x feature set.
Added unit and game tests for the new features and optimizations.
Improved benchmark measurement accuracy and result presentation.
Improved logging, server load summaries, and stats output while reducing noisy output.

12.1.0

Fixed issue with server load measurement per world was not accurate enough.
Fixed smaller memory leak in the server load measurement code.
Fixed log spam issue with auto-detected mods.
Fixed Forge Mixin issue with missing mixin configuration file.
Added auto-benchmarking tools for better performance analysis and optimization.
Improved stats command to provide more detailed information about server load and performance.
Improved Fabric performance by optimizing existing code to Fabric entity pipeline.

12.0.0 🚀

Next major alpha release with refactored code and improved performance. Now available for Fabric, Forge and NeoForge with a single codebase and better maintainability.

12.6.0Релиз26.1.2 · 5 июля 2026 г.

Changelog for Adaptive Performance Tweaks 26.1.2

Note

This change log includes the summarized changes. For the full changelog, please go to the GitHub History instead.

12.6.0

Fixed item merge losing the remainder when a drop only partially fits a nearby stack.
Fixed arrow cleanup removing thrown tridents and pickup-able player arrows; protected projectiles now use a separate hard cap (tridents removed last).
Fixed game rules not being restored on shutdown, persisting optimized values (randomTickSpeed, doFireTick, ...) into level.dat and corrupting the baseline on restart.
Fixed /aptweaks feature not applying enable/disable transitions (stale view/simulation distance and game rules).
Fixed monitoringIntervalSeconds=0 silencing monitoring instead of logging on load changes.
Fixed dimensions.ignore in spawn presets falling back to global limits instead of exempting it.
Fixed server load rising-check comparing against a two-cycles-old measurement.
Fixed login protection clearing invisibility/invulnerability set by game modes or other mods.
Added entity tag support (#namespace:tag) in spawn preset allow/deny lists.
Added protection for named/enchanted/NBT items in world/type limits with a 2x hard cap.
Added wiring for minOptimizationLoadLevel in simulation distance and game rules.
Added validation for core load thresholds and damage reduction percentages.
Improved AI throttling to skip only goal/navigation/sensing, keeping physics, item pickup and despawning intact.
Improved game-rule movement warmup to work without an active distance feature.
Improved config reload to log mod conflict warnings only once.
Improved entity tracking report to write asynchronously and mob-farm cleanup to use live entity positions.
Improved benchmark heap metric: GC-collapsed measurements now report "n/a (GC)" instead of a misleading 0KB delta.
Removed unused NeoForge-style mixin entries from the Forge mods.toml.

12.5.0

Fixed benchmark report not covering all features and adjustments.
Added Exploration scenario and update benchmark scenarios.
Improved simulation distance features and set default to AUTO with better load-based adjustments.

12.4.0

Added player warmup for simulation distance and random tick speed on login, teleport and fast movement.
Added config toggles for login and movement warmup independent of minOptimizationLoadLevel.
Improved load-based simulation distance changes with step-by-step reductions.
Improved warmup recovery to only restore values below normal server load.
Improved reset handling and tests for restoring server default values.

12.3.0

Added more detailed MSPT buckets and improved reporting.
Added smaller performance optimizations and removed some redundant code.
Added additional benchmark scenarios for better performance analysis and optimization.
Improved benchmark reporting and save result to file.
Improved entity report and store results outside of config folder.
Improved memory usage and reduced string concatenation in maps.

12.2.0

Fixed #89 compatibility for many popular mods with special entities.
Fixed #88 and #84 by providing NeoForge version and fixed related issues.
Fixed #49 Ars Nouveau mob spawn handling and compatibility.
Fixed benchmark crashes with chunk optimization mods.
Fixed features are not completely disabled and downgrading benchmark phase 2 results.
Fixed the incorrect Forge "missing on client" log message on clients.
Added entity exclusion metadata (mod, category, reason) and entity tracking reports.
Added more third-party compatibility checks.
Added stuck arrow cleanup.
Added spawn-type-based handling for structures, chunk generation, reinforcements...
Added movement-aware simulation distance throttling.
Added more spawn presets for known mods and entities.
Added the missing "Eco Stack Manager" integration for the 12.x feature set.
Added unit and game tests for the new features and optimizations.
Improved benchmark measurement accuracy and result presentation.
Improved logging, server load summaries, and stats output while reducing noisy output.

12.1.0

Fixed issue with server load measurement per world was not accurate enough.
Fixed smaller memory leak in the server load measurement code.
Fixed log spam issue with auto-detected mods.
Fixed Forge Mixin issue with missing mixin configuration file.
Added auto-benchmarking tools for better performance analysis and optimization.
Improved stats command to provide more detailed information about server load and performance.
Improved Fabric performance by optimizing existing code to Fabric entity pipeline.

12.0.0 🚀

Next major alpha release with refactored code and improved performance. Now available for Fabric, Forge and NeoForge with a single codebase and better maintainability.

12.6.0Релиз26.1.2 · 5 июля 2026 г.

Changelog for Adaptive Performance Tweaks 26.1.2

Note

This change log includes the summarized changes. For the full changelog, please go to the GitHub History instead.

12.6.0

Fixed item merge losing the remainder when a drop only partially fits a nearby stack.
Fixed arrow cleanup removing thrown tridents and pickup-able player arrows; protected projectiles now use a separate hard cap (tridents removed last).
Fixed game rules not being restored on shutdown, persisting optimized values (randomTickSpeed, doFireTick, ...) into level.dat and corrupting the baseline on restart.
Fixed /aptweaks feature not applying enable/disable transitions (stale view/simulation distance and game rules).
Fixed monitoringIntervalSeconds=0 silencing monitoring instead of logging on load changes.
Fixed dimensions.ignore in spawn presets falling back to global limits instead of exempting it.
Fixed server load rising-check comparing against a two-cycles-old measurement.
Fixed login protection clearing invisibility/invulnerability set by game modes or other mods.
Added entity tag support (#namespace:tag) in spawn preset allow/deny lists.
Added protection for named/enchanted/NBT items in world/type limits with a 2x hard cap.
Added wiring for minOptimizationLoadLevel in simulation distance and game rules.
Added validation for core load thresholds and damage reduction percentages.
Improved AI throttling to skip only goal/navigation/sensing, keeping physics, item pickup and despawning intact.
Improved game-rule movement warmup to work without an active distance feature.
Improved config reload to log mod conflict warnings only once.
Improved entity tracking report to write asynchronously and mob-farm cleanup to use live entity positions.
Improved benchmark heap metric: GC-collapsed measurements now report "n/a (GC)" instead of a misleading 0KB delta.
Removed unused NeoForge-style mixin entries from the Forge mods.toml.

12.5.0

Fixed benchmark report not covering all features and adjustments.
Added Exploration scenario and update benchmark scenarios.
Improved simulation distance features and set default to AUTO with better load-based adjustments.

12.4.0

Added player warmup for simulation distance and random tick speed on login, teleport and fast movement.
Added config toggles for login and movement warmup independent of minOptimizationLoadLevel.
Improved load-based simulation distance changes with step-by-step reductions.
Improved warmup recovery to only restore values below normal server load.
Improved reset handling and tests for restoring server default values.

12.3.0

Added more detailed MSPT buckets and improved reporting.
Added smaller performance optimizations and removed some redundant code.
Added additional benchmark scenarios for better performance analysis and optimization.
Improved benchmark reporting and save result to file.
Improved entity report and store results outside of config folder.
Improved memory usage and reduced string concatenation in maps.

12.2.0

Fixed #89 compatibility for many popular mods with special entities.
Fixed #88 and #84 by providing NeoForge version and fixed related issues.
Fixed #49 Ars Nouveau mob spawn handling and compatibility.
Fixed benchmark crashes with chunk optimization mods.
Fixed features are not completely disabled and downgrading benchmark phase 2 results.
Fixed the incorrect Forge "missing on client" log message on clients.
Added entity exclusion metadata (mod, category, reason) and entity tracking reports.
Added more third-party compatibility checks.
Added stuck arrow cleanup.
Added spawn-type-based handling for structures, chunk generation, reinforcements...
Added movement-aware simulation distance throttling.
Added more spawn presets for known mods and entities.
Added the missing "Eco Stack Manager" integration for the 12.x feature set.
Added unit and game tests for the new features and optimizations.
Improved benchmark measurement accuracy and result presentation.
Improved logging, server load summaries, and stats output while reducing noisy output.

12.1.0

Fixed issue with server load measurement per world was not accurate enough.
Fixed smaller memory leak in the server load measurement code.
Fixed log spam issue with auto-detected mods.
Fixed Forge Mixin issue with missing mixin configuration file.
Added auto-benchmarking tools for better performance analysis and optimization.
Improved stats command to provide more detailed information about server load and performance.
Improved Fabric performance by optimizing existing code to Fabric entity pipeline.

12.0.0 🚀

Next major alpha release with refactored code and improved performance. Now available for Fabric, Forge and NeoForge with a single codebase and better maintainability.

12.6.0Релиз1.21.11 · 5 июля 2026 г.

Changelog for Adaptive Performance Tweaks 1.21.1

Note

This change log includes the summarized changes. For the full changelog, please go to the GitHub History instead.

12.6.0

Fixed item merge losing the remainder when a drop only partially fits a nearby stack.
Fixed arrow cleanup removing thrown tridents and pickup-able player arrows; protected projectiles now use a separate hard cap (tridents removed last).
Fixed game rules not being restored on shutdown, persisting optimized values (randomTickSpeed, doFireTick, ...) into level.dat and corrupting the baseline on restart.
Fixed /aptweaks feature not applying enable/disable transitions (stale view/simulation distance and game rules).
Fixed monitoringIntervalSeconds=0 silencing monitoring instead of logging on load changes.
Fixed dimensions.ignore in spawn presets falling back to global limits instead of exempting it.
Fixed server load rising-check comparing against a two-cycles-old measurement.
Fixed login protection clearing invisibility/invulnerability set by game modes or other mods.
Added entity tag support (#namespace:tag) in spawn preset allow/deny lists.
Added protection for named/enchanted/NBT items in world/type limits with a 2x hard cap.
Added wiring for minOptimizationLoadLevel in simulation distance and game rules.
Added validation for core load thresholds and damage reduction percentages.
Improved AI throttling to skip only goal/navigation/sensing, keeping physics, item pickup and despawning intact.
Improved game-rule movement warmup to work without an active distance feature.
Improved config reload to log mod conflict warnings only once.
Improved entity tracking report to write asynchronously and mob-farm cleanup to use live entity positions.
Improved benchmark heap metric: GC-collapsed measurements now report "n/a (GC)" instead of a misleading 0KB delta.
Removed unused NeoForge-style mixin entries from the Forge mods.toml.

12.5.0

Fixed benchmark report not covering all features and adjustments.
Added Exploration scenario and update benchmark scenarios.
Improved simulation distance features and set default to AUTO with better load-based adjustments.

12.4.0

Added player warmup for simulation distance and random tick speed on login, teleport and fast movement.
Added config toggles for login and movement warmup independent of minOptimizationLoadLevel.
Improved load-based simulation distance changes with step-by-step reductions.
Improved warmup recovery to only restore values below normal server load.
Improved reset handling and tests for restoring server default values.

12.3.0

Added more detailed MSPT buckets and improved reporting.
Added smaller performance optimizations and removed some redundant code.
Added additional benchmark scenarios for better performance analysis and optimization.
Improved benchmark reporting and save result to file.
Improved entity report and store results outside of config folder.
Improved memory usage and reduced string concatenation in maps.

12.2.0

Fixed #89 compatibility for many popular mods with special entities.
Fixed #88 and #84 by providing NeoForge version and fixed related issues.
Fixed #49 Ars Nouveau mob spawn handling and compatibility.
Fixed benchmark crashes with chunk optimization mods.
Fixed features are not completely disabled and downgrading benchmark phase 2 results.
Fixed the incorrect Forge "missing on client" log message on clients.
Added entity exclusion metadata (mod, category, reason) and entity tracking reports.
Added more third-party compatibility checks.
Added stuck arrow cleanup.
Added spawn-type-based handling for structures, chunk generation, reinforcements...
Added movement-aware simulation distance throttling.
Added more spawn presets for known mods and entities.
Added the missing "Eco Stack Manager" integration for the 12.x feature set.
Added unit and game tests for the new features and optimizations.
Improved benchmark measurement accuracy and result presentation.
Improved logging, server load summaries, and stats output while reducing noisy output.

12.1.0

Fixed issue with server load measurement per world was not accurate enough.
Fixed smaller memory leak in the server load measurement code.
Fixed log spam issue with auto-detected mods.
Fixed Forge Mixin issue with missing mixin configuration file.
Added auto-benchmarking tools for better performance analysis and optimization.
Improved stats command to provide more detailed information about server load and performance.
Improved Fabric performance by optimizing existing code to Fabric entity pipeline.

12.0.0 🚀

Next major alpha release with refactored code and improved performance. Now available for Fabric, Forge and NeoForge with a single codebase and better maintainability.

12.6.0Релиз1.21.11 · 5 июля 2026 г.

Changelog for Adaptive Performance Tweaks 1.21.1

Note

This change log includes the summarized changes. For the full changelog, please go to the GitHub History instead.

12.6.0

Fixed item merge losing the remainder when a drop only partially fits a nearby stack.
Fixed arrow cleanup removing thrown tridents and pickup-able player arrows; protected projectiles now use a separate hard cap (tridents removed last).
Fixed game rules not being restored on shutdown, persisting optimized values (randomTickSpeed, doFireTick, ...) into level.dat and corrupting the baseline on restart.
Fixed /aptweaks feature not applying enable/disable transitions (stale view/simulation distance and game rules).
Fixed monitoringIntervalSeconds=0 silencing monitoring instead of logging on load changes.
Fixed dimensions.ignore in spawn presets falling back to global limits instead of exempting it.
Fixed server load rising-check comparing against a two-cycles-old measurement.
Fixed login protection clearing invisibility/invulnerability set by game modes or other mods.
Added entity tag support (#namespace:tag) in spawn preset allow/deny lists.
Added protection for named/enchanted/NBT items in world/type limits with a 2x hard cap.
Added wiring for minOptimizationLoadLevel in simulation distance and game rules.
Added validation for core load thresholds and damage reduction percentages.
Improved AI throttling to skip only goal/navigation/sensing, keeping physics, item pickup and despawning intact.
Improved game-rule movement warmup to work without an active distance feature.
Improved config reload to log mod conflict warnings only once.
Improved entity tracking report to write asynchronously and mob-farm cleanup to use live entity positions.
Improved benchmark heap metric: GC-collapsed measurements now report "n/a (GC)" instead of a misleading 0KB delta.
Removed unused NeoForge-style mixin entries from the Forge mods.toml.

12.5.0

Fixed benchmark report not covering all features and adjustments.
Added Exploration scenario and update benchmark scenarios.
Improved simulation distance features and set default to AUTO with better load-based adjustments.

12.4.0

Added player warmup for simulation distance and random tick speed on login, teleport and fast movement.
Added config toggles for login and movement warmup independent of minOptimizationLoadLevel.
Improved load-based simulation distance changes with step-by-step reductions.
Improved warmup recovery to only restore values below normal server load.
Improved reset handling and tests for restoring server default values.

12.3.0

Added more detailed MSPT buckets and improved reporting.
Added smaller performance optimizations and removed some redundant code.
Added additional benchmark scenarios for better performance analysis and optimization.
Improved benchmark reporting and save result to file.
Improved entity report and store results outside of config folder.
Improved memory usage and reduced string concatenation in maps.

12.2.0

Fixed #89 compatibility for many popular mods with special entities.
Fixed #88 and #84 by providing NeoForge version and fixed related issues.
Fixed #49 Ars Nouveau mob spawn handling and compatibility.
Fixed benchmark crashes with chunk optimization mods.
Fixed features are not completely disabled and downgrading benchmark phase 2 results.
Fixed the incorrect Forge "missing on client" log message on clients.
Added entity exclusion metadata (mod, category, reason) and entity tracking reports.
Added more third-party compatibility checks.
Added stuck arrow cleanup.
Added spawn-type-based handling for structures, chunk generation, reinforcements...
Added movement-aware simulation distance throttling.
Added more spawn presets for known mods and entities.
Added the missing "Eco Stack Manager" integration for the 12.x feature set.
Added unit and game tests for the new features and optimizations.
Improved benchmark measurement accuracy and result presentation.
Improved logging, server load summaries, and stats output while reducing noisy output.

12.1.0

Fixed issue with server load measurement per world was not accurate enough.
Fixed smaller memory leak in the server load measurement code.
Fixed log spam issue with auto-detected mods.
Fixed Forge Mixin issue with missing mixin configuration file.
Added auto-benchmarking tools for better performance analysis and optimization.
Improved stats command to provide more detailed information about server load and performance.
Improved Fabric performance by optimizing existing code to Fabric entity pipeline.

12.0.0 🚀

Next major alpha release with refactored code and improved performance. Now available for Fabric, Forge and NeoForge with a single codebase and better maintainability.