Performance tweaks is a mod that contains several optimizations and fixes, ranging from entity optimizations to redstone. Post your thoughts in the comments, for new optimizations you would like to see!

From now on, I am bundling performance tweaks as a multi-platform mod, available for many Minecraft versions. Every optimization will be included, but there will be config options to disable some of them if you don't want them.

Config: (1.2.0+) All config files are now under config/perf-tweaks folder

Dependencies: Because this mod is now multi-platform, Architectury API is now a required dependency

This mod can just be installed on client and server, but works best when installed on both.

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Optimizations

Many of these optimizations are no longer updated to modern Minecraft versions, or have additional functionality / configure-ability.

Client Side Optimizations

• Optimization to skip collision checks with many client side entities. (These checks are already handled by the server, reducing the strain on your client.)
  • Forked from Corgi_Taco's Entity Collision FPS Fix (Curseforge), (Github)
  • Super lightweight, so it should be compatible all mods.

Server Side Optimizations

• Optimization to allow mobs with equipped items to despawn naturally. Preserves dropped items when mobs despawn (Configurable)

  • Forked from frikinjay's Let Me Despawn mod (Curseforge), (Github). Contains additional configuration options not present in the original mod
  • Lightweight tweak that should boost server performance if your world has lots of various entities.
  • Configurable mob exclusion list. To make a mob "persistent" just enter perf_tweaks persistence <mob-name>
  • If you don't want this optimization, Set "despawning.enable_despawning_optimization": false in the perf_tweaks.json in the configs.

• Optimizations to reduce block updates and power calculations made to Redstone. (Configurable)

  • Forked from AC. Credit to SpaceWalkerRS for this fantastic mod: (Curseforge), (GitHub)
  • Designed to be minimally invasive to existing Minecraft code, so it shouldn't have any compatibility issues except maybe with mods that significantly alter Redstone.
  • If you don't want this optimization, Set "enable_alternate_current_by_default": false in the perf_tweaks.json in the configs. Additionally, you can disable alternate current for any world by typing command alternatecurrent off

• Optimizations to speed up performance with powered rails. Replaces wasteful recursive method calling with a much faster check by a single powered rail.

  • Forked from the mod by FX_PR0CESS: (Curseforge), (Github). The original mod is no longer being updated.
  • This mod comprises 1 mixin, so there should be no compatibility issues