CurseForge · Minecraft mod
Mobtimizations - Entity Performance Fixes
Optimizes a lot of tasks that Entity AI wastefully performs, minimal effect on gameplay.
Quick answer
Which Mobtimizations - Entity Performance Fixes release should I use?
Mobtimizations - Entity Performance Fixes mobtimizations-forge-1.20.1-1.0.1.jar targets 1.20.1 with Forge, NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Mobtimizations - Entity Performance Fixes required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Mobtimizations - Entity Performance Fixes mobtimizations-forge-1.20.1-1.0.1.jar need?
mobtimizations-forge-1.20.1-1.0.1.jar. Change the file and its required mods may change too.
Install CoroUtil first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Mobtimizations - Entity Performance Fixes without breaking your instance.
Built for Mobtimizations - Entity Performance Fixes mobtimizations-forge-1.20.1-1.0.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use mobtimizations-forge-1.20.1-1.0.1.jar. It targets 1.20.1 with Forge, NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install CoroUtil first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside mobtimizations-forge-1.20.1-1.0.1.jar. It opens that exact file at the source.
About this project
What does Mobtimizations - Entity Performance Fixes add?
Server optimization mod that was originally created for the DeceasedCraft modpack to help with their high entity counts. The mod is focused on entities, reducing their impact on your server while keeping change in gameplay to a minimum.
Features:
Reduces the rate of expensive mob wander pathfinding, even more so if far from players.
Reduces how often the expensive enemy targeting tasks are run.
For monsters, disables the expensive 3x3x3 hazard scanning that is constantly running every tick while path following, your pets are safe.
Disables the frequent pathfinds done while already following a path.
Reduces the expensive searching done to find a turtle egg to crush, for zombies/husks, by default fully disabling it.
Optimizes the expensive zombie village raid task that scans around a lot for villagers, by default cuts the chance to 1/3.
Wander pathfinding and enemy targetting are further reduced when the mob is not near a player.
Each feature can be configured on/off, and some further with chance to cancel an attempt.
Demonstration:
With each test I had lots of extra mobs spawned - On my 20 core i5-13600K I kept 1000 monsters spawned to stress the server.
All the mods 7 - MC 1.18 modpack:
Mod off: 38ms avg - 95ms max
Mod on: 30ms avg (server load cut by 22%) - 45ms max (peak server load cut by over 50%!)

Deceasedcraft - MC 1.18 modpack:
Mod off: 32ms avg - 61ms max
Mod on: 24ms avg (server load cut by 25%) - 50ms max (peak server load cut by 20%)

- Requires CoroUtil to run: CoroUtil
Project description from CurseForge.
Pick your setup
Mobtimizations - Entity Performance Fixes by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
3 loader builds1.19.2
2 loader builds1.18.2
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Mobtimizations - Entity Performance Fixes versions and loaders
mobtimizations-forge-1.20.1-1.0.1.jar
8 Feb 2026
mobtimizations-fabric-1.20.1-1.0.0.jar
25 Feb 2024
mobtimizations-forge-1.20.1-1.0.0.jar
25 Feb 2024
mobtimizations-fabric-1.19.2-1.0.0.jar
25 Feb 2024
mobtimizations-forge-1.19.2-1.0.0.jar
25 Feb 2024
mobtimizations-fabric-1.18.2-1.0.0.jar
13 Feb 2024
mobtimizations-forge-1.18.2-1.0.0.jar
13 Feb 2024
Looking for an older file? The official CurseForge project page is in Resources.