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SyncBoost

The simplest way to boost server performance and eliminate lag.

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GPL-3.0-or-later

Опубликован 28 января 2026 г.

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SyncBoost

The simplest way to boost server performance and eliminate lag.

Modrinth GitHub Discord

⚡ The Ultimate Performance Solution

SyncBoost is not just another "lag clear" plugin; it is a comprehensive, professional-grade performance engine. Re-engineered for maximum efficiency, SyncBoost targets the root causes of server degradation—identifying CPU bottlenecks, memory leaks, and excessive entity overhead—allowing your server to sustain high player counts without compromising gameplay quality.

Why SyncBoost?

  • ✨ Premium Experience: A stunning, modern GUI that brings visual elegance to server management.
  • 🔧 Intelligent Automation: Dynamic algorithms that sense lag spikes and proactively adjust server load.
  • 🗑️ Surgical Optimization: Reduce AI overhead, optimize redstone, and limit entities with pinpoint accuracy.
  • 📊 Deep Monitoring: Real-time MSPT charts via interactive maps and detailed hardware benchmarks.
  • ⚡ Asynchronous Core: Built to be ultra-lightweight, ensuring the optimization process never burdens your server.

[!IMPORTANT] SyncBoost is optimized for modern Minecraft infrastructure (1.20.5 - 1.21.x) but also fully supports legacy versions (1.17.1 - 1.20.4). Recommended Java 21, minimum Java 17.

📋 Requirements

Requirement Version
Java 17 or newer (Required)
Minecraft 1.17.1 - 1.21.4+
Server Software Spigot, Paper, Purpur, Pufferfish, Folia, or compatible forks

🚀 Key Modules

SyncBoost is modular by design. Enable or disable features as needed via the in-game GUI or modules/ config files.

Module Impact Description
MobAiReducer 🔴 Very High Optimizes creature pathfinding and AI behavior. Essential for farm-heavy survival servers.
EntityLimiter 🔴 High Enforces limits on entity counts. Features Smart Mob Cap effectively balancing mob density based on server TPS.
LagShield 🔴 High Active monitoring that triggers safety measures (e.g., pausing spawners) when TPS drops critically.
ExplosionOptimizer 🔴 High Efficiently handles TNT and crystal explosions to prevent physics ticks from stalling the main thread.
ChunkAnalyzer 🔴 High Scans and identifies problematic chunks with high entity/tile entity counts. Features interactive GUI with teleportation.
WorldCleaner 🟡 Medium Periodically removes ground items. Features an "Abyss" system for item recovery via /abyss.
RedstoneLimiter 🟡 Medium Detects and suppresses rapid-pulsing redstone clocks that cause TPS drops.
VehicleMotionReducer 🟡 Medium Optimizes boat and minecart collisions, movement logic, and removes mineshaft clutter.
AbilityLimiter 🟡 Medium Limits rapid Trident/Elytra usage to prevent excessive chunk loading.
HopperOptimizer 🟡 Medium Reduces hopper tick rates and optimizes item transfer logic to minimize lag.
InstantLeafDecay 🔵 Low Makes leaves decay instantly when trees are cut, reducing entity processing.
ConsoleFilter 🔵 Visual Regex-based filtering to keep your server console clean and readable.

🛠 Commands

All commands use the /syncboost (or alias /sb) prefix.

Command Description
/syncboost Open the main configuration GUI.
/syncboost menu Open the main configuration GUI.
/syncboost help Display the full list of available commands.
/syncboost monitor View real-time server statistics (TPS, MSPT, RAM, CPU).
/syncboost map Get a map item that displays a live performance graph.
/syncboost benchmark Run a CPU/RAM stress test to measure server hardware performance.
/syncboost chunks [world] Analyze chunks for performance issues. Opens GUI or shows results for a specific world.
/syncboost memory [gc/gui/listeners] Analyze memory usage, detect leaks, and view GC metrics.
/syncboost free Force run the Java Garbage Collector (GC).
/syncboost clear <type> Manually clear entities: items, creatures, or projectiles.
/syncboost ping [player] Check average player latency or a specific player's ping.
/syncboost smartcap Toggle Smart Mob Cap feature on/off.
/syncboost reload Reload all configuration files and modules.

Default Permission: syncboost.admin

🔗 Integrations

SyncBoost works seamlessly with popular plugins:

PlaceholderAPI Placeholders

Performance Metrics

Placeholder Description
%syncboost_tps% Current TPS (formatted)
%syncboost_tps_raw% Current TPS (raw double)
%syncboost_tps_color% TPS with color code (green/yellow/red)
%syncboost_mspt% Current MSPT (formatted)
%syncboost_mspt_raw% Current MSPT (raw double)
%syncboost_mspt_color% MSPT with color code
%syncboost_cpu% / %syncboost_cpuprocess% Process CPU usage
%syncboost_cpuprocess_raw% Process CPU usage (raw)
%syncboost_cpusystem% System CPU usage
%syncboost_cpusystem_raw% System CPU usage (raw)

Entity Counts

Placeholder Description
%syncboost_entities% / %syncboost_entities_total% Total entity count
%syncboost_entities_mobs% / %syncboost_mobs% Living creature count
%syncboost_entities_items% / %syncboost_items% Ground item count
%syncboost_entities_projectiles% / %syncboost_projectiles% Projectile count
%syncboost_entities_vehicles% / %syncboost_vehicles% Vehicle count

Memory Stats

Placeholder Description
%syncboost_memory_used% / %syncboost_ram_used% Used memory (MB)
%syncboost_memory_used_raw% Used memory (raw MB)
%syncboost_memory_used_gb% Used memory (GB formatted)
%syncboost_memory_max% / %syncboost_ram_max% Max memory (MB)
%syncboost_memory_max_raw% Max memory (raw MB)
%syncboost_memory_max_gb% Max memory (GB formatted)
%syncboost_memory_free% / %syncboost_ram_free% Free memory (MB)
%syncboost_memory_free_raw% Free memory (raw MB)
%syncboost_memory_percent% / %syncboost_ram_percent% Memory usage percent
%syncboost_memory_percent_raw% Memory usage percent (raw)
%syncboost_memory_bar% Visual memory bar [■■■■■■■■■■]

Server Stats

Placeholder Description
%syncboost_players% / %syncboost_online% Online player count
%syncboost_players_max% / %syncboost_max_players% Max player slots
%syncboost_worlds% Number of loaded worlds
%syncboost_chunks% / %syncboost_loaded_chunks% Total loaded chunks
%syncboost_uptime% Server uptime (HH:MM:SS)
%syncboost_uptime_hours% Uptime in hours
%syncboost_uptime_minutes% Uptime in minutes
%syncboost_uptime_seconds% Uptime in seconds

WorldCleaner Timer

Placeholder Description
%syncboost_clearlag_timer% / %syncboost_worldcleaner% Time until next clear
%syncboost_clearlag_seconds% Seconds until next clear
%syncboost_clearlag_formatted% Formatted time (MM:SS)
%syncboost_clearlag_interval% Clear interval setting
%syncboost_clearlag_enabled% Whether cleaner is enabled
%syncboost_clearlag_progress% Progress percentage
%syncboost_clearlag_bar% Visual progress bar

📊 Usage Statistics

SyncBoost anonymously collects data via bStats to help us improve performance. You can disable this in plugins/bStats/config.yml.

bStats

⚙️ Configuration

Configuration is split into:

  • config.yml - Main plugin settings (prefix, permissions, updater).
  • lang.yml - All user-facing messages.
  • modules/*.yml - Individual module settings.

You can edit configurations directly in-game using the GUI:

/syncboost

📦 Installation

  1. Download the latest SyncBoost.jar from Modrinth.
  2. Stop your Minecraft server.
  3. Place the jar into your plugins/ folder.
  4. Start the server.
  5. Configure via /syncboost or edit files in plugins/SyncBoost/.

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⭐ Credits

SyncBoost is built upon the strong foundation of LagFixer. We explicitly acknowledge and thank Jenya705 for their original work and contributions to the optimization community.

SyncBoost is a forked and modernized continuation, designed to support the latest Minecraft infrastructure while respecting the legacy of the original project.

❓ FAQ

What Java version does SyncBoost require?

SyncBoost requires minimum Java 17 and recommends Java 21 for optimal performance. Java 21 offers significant performance improvements for modern servers.

Which Minecraft versions are supported?

SyncBoost supports Minecraft 1.17.1 - 1.21.4+. Legacy versions (1.17.1 - 1.20.4) are fully supported, and 1.16.5 is available via manual build configuration.

Is SyncBoost compatible with Folia?

Yes! SyncBoost fully supports Folia's regionized multithreading. All optimization modules are compatible with Folia's architecture and use proper thread-safe operations.

What server platforms are supported?

SyncBoost works with Spigot, Paper, Purpur, Pufferfish, Folia, and any compatible fork. Paper or higher is recommended for best performance.

Will SyncBoost conflict with other optimization plugins?

SyncBoost is designed to work alongside other plugins. It integrates seamlessly with Spark for profiling and stacker plugins like WildStacker, RoseStacker, and UltimateStacker.

How do I recover accidentally cleared items?

Use the Abyss feature! Items cleared by WorldCleaner are temporarily stored and can be recovered using /abyss command within a configurable time window.

Made with <3 by Syncara Host

© 2026 Syncara Host. All rights reserved.

Ченджлог

1.2.3Релиз1.21.9, 1.21.10, 1.21.11 · 6 февраля 2026 г.

✨ New Features

🔍 Overselling Detection System

  • NEW: Automatic detection when your hosting provider may be overselling resources
  • Warns on plugin startup if resource issues detected
  • Full analysis after running /syncboost benchmark
  • Visual indicator in Main Menu Performance Hub card
  • Detection includes:
    • CPU performance below expected thresholds
    • High CPU performance variance (indicates contention)
    • Memory bandwidth issues
    • RAM overselling signs

📊 Chunk Analyzer Module

  • NEW: Comprehensive chunk analysis system to identify performance bottlenecks
  • Detects entity-heavy chunks, tile entity concentrations, and redstone activity
  • Configurable scoring weights and severity thresholds
  • Available via /syncboost chunks command or through GUI
  • Features include:
    • Real-time chunk scanning across all worlds
    • Lag score calculation based on entities, tile entities, and redstone
    • Severity levels: Normal, Warning, Danger, Critical
    • Top 10 problematic chunks display
    • Click-to-teleport functionality in GUI
    • Detailed breakdown per chunk (mobs, items, hoppers, furnaces, etc.)

🖥️ Chunk Analyzer GUI Menu

  • Beautiful animated menu showing analysis results
  • Color-coded chunk severity indicators
  • Summary statistics at a glance
  • One-click teleportation to problematic chunks
  • Refresh button for real-time updates

🧠 Memory Leak Detector

  • NEW: Comprehensive memory diagnostics and leak detection system
  • Available via /syncboost memory command or through GUI
  • Features include:
    • Real-time heap memory monitoring
    • Garbage collection metrics and overhead analysis
    • Memory trend analysis with leak detection
    • Thread count monitoring
    • Plugin listener count analysis
    • Health score calculation
  • Interactive GUI menu with:
    • Memory health card with overall status
    • Heap usage visualization with progress bars
    • GC overhead statistics
    • Memory trend analysis
    • Thread and warning cards
    • Force GC button with freed memory feedback

🐛 Bug Fixes

  • Fixed: ArrayIndexOutOfBoundsException crash on menu open

    • Main Menu now correctly uses 27-slot (3-row) inventory
    • Removed invalid card placements that caused crashes

  • Fixed: Module status not updating in Modules Menu

    • Modules now show real-time ENABLED/DISABLED status
    • Status updates automatically when modules are toggled

🎨 UI Improvements

  • Revamped Main Menu with modern card-based design
  • Rainbow animated borders on menu
  • Health-based side indicators (green/yellow/red based on server health)
  • Glassmorphism effect decorations
  • Enhanced Performance Hub with:
    • TPS health indicator with color coding
    • Memory usage progress bar
    • CPU usage display
    • NEW: Resource health status indicator

🔧 New Configuration

  • Added modules/ChunkAnalyzer.yml with:
    • Customizable score weights for entities, creatures, tile entities, hoppers, redstone
    • Adjustable warning/danger/critical thresholds
    • Auto-scan feature with configurable interval
    • Alert notifications for danger-level chunks

🎨 Customizable Message Prefix

  • NEW: All message prefixes can now be fully customized
  • Use <prefix> placeholder in lang.yml to reference the main prefix from config.yml
  • Change main.prefix in config once and all messages update automatically
  • Updated all default messages in lang.yml to use the new <prefix> placeholder

📊 Expanded PlaceholderAPI Support

  • NEW: 40+ new placeholders available for use in scoreboards, holograms, etc.
  • PlaceholderAPI identifier changed from lagfixer to syncboost
Performance Metrics
  • %syncboost_tps% - TPS (formatted to 2 decimals)
  • %syncboost_tps_raw% - TPS (raw value)
  • %syncboost_tps_color% - TPS with automatic color coding (&a/&e/&c)
  • %syncboost_mspt% - Milliseconds per tick
  • %syncboost_mspt_color% - MSPT with color coding
  • %syncboost_cpu% - CPU process usage
  • %syncboost_cpusystem% - CPU system usage
Entity Counts
  • %syncboost_entities% - Total entities
  • %syncboost_mobs% - Total mobs/creatures
  • %syncboost_items% - Ground items
  • %syncboost_projectiles% - Projectiles
  • %syncboost_vehicles% - Vehicles
Memory Statistics
  • %syncboost_memory_used% - RAM used (e.g., "2048MB")
  • %syncboost_memory_max% - Max RAM
  • %syncboost_memory_free% - Free RAM
  • %syncboost_memory_percent% - RAM usage percentage
  • %syncboost_memory_bar% - Visual progress bar for RAM
  • %syncboost_memory_used_gb% / %syncboost_memory_max_gb% - RAM in GB
Server Statistics
  • %syncboost_players% - Online player count
  • %syncboost_players_max% - Max players
  • %syncboost_worlds% - Number of worlds
  • %syncboost_chunks% - Total loaded chunks
  • %syncboost_uptime% - Server uptime (HH:MM:SS format)
  • %syncboost_uptime_hours% / %syncboost_uptime_minutes%
Clearlag Timer
  • %syncboost_clearlag_timer% - Time until next clear (e.g., "45s")
  • %syncboost_clearlag_seconds% - Raw seconds remaining
  • %syncboost_clearlag_formatted% - Formatted time (MM:SS)
  • %syncboost_clearlag_interval% - Configured interval
  • %syncboost_clearlag_enabled% - Module status (true/false)
  • %syncboost_clearlag_progress% - Progress percentage
  • %syncboost_clearlag_bar% - Visual progress bar

📝 Technical Changes

  • Added OversellDetector.java utility class
  • Improved ModulesMenu.java update() method for real-time status
  • Fixed slot calculations in MainMenu.java for 3-row inventory
  • Cleaned up unused card definitions
  • Added ChunkAnalyzerModule.java - Core analysis engine
  • Added ChunkAnalyzerCommand.java - /sb chunks command handler
  • Added ChunkAnalyzerMenu.java - Interactive GUI menu
  • Modified Language.java to support <prefix> tag resolver
  • Refactored PlaceholderAPIHook.java with comprehensive placeholder support
  • Updated lang.yml with <prefix> placeholder documentation and usage
1.2.1Релиз1.21.9, 1.21.10, 1.21.11 · 28 января 2026 г.

📋 Changelog v1.2.1

🐛 Bug Fixes

  • Folia Threading Fix - Fixed IllegalStateException: Thread failed main thread check in WorldCleanerModule on Folia servers

    • Entity state (like getCustomName()) is now accessed from the correct region thread
    • Entity processing is dispatched to each chunk's region thread on Folia

  • Modrinth Publishing - Fixed version format to comply with Modrinth's semver regex validation

    • Changed from 1.x.x [build x] to 1.x.x+x format
1.2.0Релиз1.21.9, 1.21.10, 1.21.11 · 28 января 2026 г.

[1.2.0] - 2026-01-28

🚀 New Features

  • Smart Mob Cap System
    • Introduced dynamic mob limits that strictly scale based on server TPS.
    • Added smart_cap configuration section to EntityLimiter.yml.
    • Priority System:
      • High Priority (Protected): Bosses, Tamed, Leashed, Named entities, and ModelEngine models.
      • Low Priority (First to remove): Common hostiles (Zombies, Skeletons, etc.).
  • Full Folia Support
    • Added native support for Folia servers (folia-supported: true).
    • Implemented region-thread-safe entity processing.
  • Legacy Version Support
    • Re-enabled support for older Minecraft versions (1.17.1 - 1.20.4).
    • Configured cross-compilation for Java 17 compatibility on legacy modules.

🐛 Bug Fixes

  • Critical Threading Fix: Resolved IllegalStateException and UnsupportedOperationException on Folia servers caused by accessing entity data from the global thread.
  • MobAiReducer: Fixed threading context for entity optimization on Folia.
  • Build System: Fixed Gradle build failures related to Java version mismatches between modules.

🛠 Technical Changes

  • Refactored AbstractFork to include isFolia() detection.
  • Updated EntityLimiterModule to use region-aware scheduling for chunk processing.
1.0.0Релиз1.21.9, 1.21.10, 1.21.11 · 28 января 2026 г.

[1.0.0] - 2026-01-28

🚀 The Rebranding Update

This release marks a new beginning as SyncBoost. We have focused entirely on establishing the new identity, refining the user experience, and cleaning up the codebase.

✨ Added

  • New Identity: Complete rebrand from "LagFixer" to "SyncBoost".
  • GUI Revamp: Brand new in-game menu structure with a modern Blue/Cyan theme.
  • Documentation: Comprehensive README.md overhaul with detailed module info.
  • Professional Logs: Cleaner startup console output.

🛠 Changed

  • Commands: All commands now use /syncboost prefix.
  • Messages: Standardized chat formatting with » bullets and consistent coloring.
  • Build: Enforced Java 21 requirement for better performance.

⚠️ Known Limitations

  • Folia Support: ❌ Not supported in this version. Use on Spigot/Paper/Purpur only. Folia support is planned for the next update.
  • Legacy Versions: Support for Minecraft 1.16.5 - 1.20.4 is currently disabled in the build configuration.

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