Mod
Lithium (Fabric/NeoForge)
A broad general-purpose optimization mod that speeds up game logic across many systems without changing behavior.
Description from the mod
Lithium is a free and open-source optimization mod for Minecraft which makes a wide range of performance improvements to the game.
Mentioned in
More from Performance
Alternate CurrentReimplements redstone dust updates more efficiently, reducing lag from large redstone contraptions without changing their behavior.
BadOptimizationsClient-side optimization mod that targets general game logic rather than rendering, reducing overall CPU load.
Better Biome ReblendWidens and speeds up the blending of biome colors (grass, foliage, water), giving smoother color transitions between biomes at a lower performance cost.
Chunk SendingOptimizes how chunk data is packaged and sent to players, reducing network and server load.
ClumpsMerges nearby experience orbs into a single orb, reducing lag and cutting down on entity clutter.
Concurrent Chunk Management EngineImproves how chunks are generated and loaded, reducing world-generation stutter.