Performo

A Fabric mod based on Starlight that improves the performance of light updates in Minecraft.

Speed up your world loading by removing spawn chunks.

A significantly faster Random Generator implementation for Minecraft, with near vanilla parity.

Async particle tick/rendering

Use DSA & fastest math formulas for best perfomance! Compatible with Sodium/Embeddium, Iris and shaders.

Optimizes a lot of tasks that Entity AI wastefully performs, minimal effect on gameplay.

Improved achievement performance

Another optimizing mod, provides deduplication, improved memory control, shader/chunk/nbt optimizations and enchanced mob AI. Full compatible with Sodium/Forks, Lithium/Forks, Iris/Forks

Little optimization bedrock layer

Async is a Fabric mod designed to improve the performance of entities by processing them in parallel threads.

Hide extra entities in order to reduce lag, especially with mob farms. The mobs still exist in the world, they are just not visible.

Mainly optimize the game launching time for large pack

The vertical chunk section syncing mod.

An extremely radical and experimental optimization for Minecraft server performances.

Entity LOD Optimizer optimizes Minecraft server performance by dynamically adjusting entity AI based on distance from players