RayLagFix is a modern, lightweight, and advanced server lag reduction & optimization plugin for Paper/Purpur Minecraft 1.21+ servers.
Built for server owners who want professional-grade lag control without sacrificing safety, RayLagFix delivers smart automatic cleanup, TPS/MSPT monitoring, emergency performance protection, colorful warnings, bossbar countdowns, admin GUI tools, and deep configuration — all in a clean and optimized package.
If your server struggles with:
Then RayLagFix is designed for exactly that.
It helps reduce lag intelligently, with safe defaults for survival servers and advanced controls for larger networks.
RayLagFix is built to be safe for SMP / survival servers.
By default, it can preserve:
No aggressive “delete everything” behavior unless you enable it.
When TPS drops too low, RayLagFix can automatically trigger:
Perfect for sudden lag spikes caused by farms, grinders, mob piles, or item abuse.
Manage your server faster with a built-in admin GUI:
Includes multiple config files for deep customization:
config.ymlmessages.ymlsettings.ymlgui.ymlworlds.ymlYou can customize:
Apply different optimization rules per world:
This is especially useful if your lobby needs stricter cleanup than your main world.
Optional PlaceholderAPI integration with placeholders like:
%raylagfix_tps%%raylagfix_mspt%%raylagfix_items%%raylagfix_entities%%raylagfix_chunks%%raylagfix_next_cleanup%/raylagfix

A modern, lightweight, and advanced lag reduction plugin for Paper/Purpur 1.21+ servers — smart cleanup, TPS monitoring, emergency mode, admin GUI, and highly configurable performance optimization.