LessLag

LessLag

LessLag is a performance optimization plugin for Minecraft servers that reduces lag automatically by controlling worlds, entities, redstone, mob AI, and much more. Designed to keep TPS high without sacrificing gameplay.

💡 About

LessLag dynamically monitors server performance and automatically disables or throttles lag-inducing features.
From unloading inactive worlds to merging dropped items, disabling redstone during TPS drops, and controlling entity AI—LessLag keeps your server smooth with minimal change of vanilla features.

Requires Protocol Lib to work!

✨ Key Features

• ⚙️ Fully Customizable – Every feature can be customized in the config (plugins/LessLag/config.yml)
• 🗺 World Management – Unload inactive worlds automatically
• 🧹 Item & Entity Control – Auto-clear dropped items, stack drops, cap entities per world and per chunk
• 🚷 Player Protection – Kick packet spammers, block teleportation when TPS are low, anti-chat spam
• 🔌 Redstone Optimization – Disable redstone, fluids, explosions, falling blocks
• 🧠 Mob AI Optimization – Freeze mobs when no players nearby
• 🧭 Chunk Loading Control – Prevent mass chunk load during lag spikes
• 📊 Performance Profiler – Real-time TPS, MSPT, CPU, RAM, player ping tracking
• ⚡ Smart TPS Handling – Auto-disable heavy operations when TPS drops

📂 Commands

Command · Description
/lesslag / /ll · Main command
/ll reload · Reloads configuration
/ll info · Shows plugin info
/ll profiler · Toggles performance profiler
/ll worlds · Lists loaded worlds with stats

🔑 Permissions

Permission · Description
lesslag.admin · Access /ll command & get notified about performance related data

✨ Showcase

Improved item stacking, also works with un-stackable items, no item amount limit

Everything is customizable, even the item stack holograms

Performance Profiler

World list command /ll worlds

Anti chat spam

Disable Fluids, Redstone and more when TPS are low

Auto-clear dropped items

Smart entity removal

Auto-unload inactive worlds

⚙️ Requirements

• Minecraft 1.16+
• Java 17 or higher
• Paper / Spigot server (or forks of those)
• Protocol Lib

🤝 Contribute

I welcome contributions!

1. Fork the repository on github
2. Create a feature branch (feature/my-feature)
3. Commit changes
4. Open a Pull Request

❓ Support

Having problems with this plugin?
Create a new issue in the github repository and I will help you fix it.

❤️ Donate

If you enjoy LessLag and want to support its development:

• Buy me a coffee with Ko-fi

Have a nice day