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Universal Optimization Mod Wiki & Guide

Java EditionModGuides 4FAQ 10Related mods 48

Improves game performance and reduces lag across various systems and configurations.

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Contents (4)
  1. Guides
  2. Frequently asked questions
  3. Gallery
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Guides

Step-by-step, in-game.

Prevent Freezes When Opening Crafting MenusEnable Recipe Caching Open your configuration file and navigate to the ["Recipe Cache"] section. Ensure…Reduce Lag from Distant MobsEnable Mob AI Freezing Locate the ["Mob Blocking AiLod Settings"] section in your configuration. Set…Set a Total Mob Cap for Your WorldLocate the Global Limit Setting Open your configuration file and find the ["Mob Blocking Settings"] section. The…Stop Specific Mobs from SpawningIdentify the Mob First, determine the exact namespace ID of the mob you want to block. Most vanilla mobs follow the…

Frequently asked questions

How do I start using this mod?
The mod works automatically once installed with default settings that disable mob collisions and enable recipe caching. Open your config file to customize spawn limits, mob blocking, and movement features to match your playstyle and hardware.
Why am I still getting lag spikes when exploring?
Make sure chunk caching is enabled in your config and that your `allMobsLimit` is set to a reasonable value for your system (default is 700). If you're still experiencing freezes, lower the mob cap further or enable the AI distance limiter to freeze distant mob behavior.
What does 'disabling mob collisions' actually do?
When enabled, mobs pass through each other instead of pushing around, which stops the game from calculating collision physics between every mob in a group. This significantly reduces CPU load, especially in areas with many spawned creatures.
Can I stop only certain mobs from spawning?
Yes, use the `blockedMobs` list in the Mob Blocking Settings section of your config file and add the mob's namespace ID with a spawn limit number (for example, `minecraft:zombie 40` allows up to 40 zombies). Mobs without a number listed are blocked entirely.

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