How do I install StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. In MC Java Mods, or directly above on this page.

What Minecraft version does StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads work with?

The listing gives Minecraft 1.21.1, 1.20.1. This is the version stated by the author or source site, not something we verified ourselves.

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StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads

Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.

by 9minecraftmods

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Open in MC Java Mods Get it on Google Play →

StutterFix Mod allows them to configure the main threads of the game. This mod comes with a default configuration that is set to minimize stuttering, providing a smoother gameplay experience.

Features:

Stutter Reduction: Provides an approximate configuration to reduce stuttering right out of the box.
Thread Configuration: Allows players to manually adjust the main threads of the game for optimal performance.
Smoother Gameplay: Enhances the overall gaming experience by reducing lag and stuttering.

Screenshots:

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 2

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 3

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 4

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 5

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 6

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 7

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 8

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 9

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 10

StutterFix Mod (1.21.1, 1.20.1) – Optimize Your Game Threads — Minecraft Java mod, screenshot 11

StutterFix Mod Download Links

For Minecraft 1.21.1, 1.21

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.20.6, 1.20.5

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.20.4, 1.20.3

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.20.2, 1.20.1

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.20

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.19.4

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.19.2

Fabric version: Download from Server 1 – Download from Server 2

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.1, 1.20.1
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: In MC Java Mods, or directly above on this page.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Downloads as 200703.mcaddon
Download size: 26 KB
Download link checked 29 Jul 2026 — working
Mirrored on our own servers — the download does not depend on the original host

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.21 Java mods for 1.20