Idle Boost Mod (1.21.1, 1.20.1) – Optimizes Performance When Minecraft Is In The Background
There may be situations where you are multitasking between playing Minecraft and doing some other task on your PC. When you minimize the game window to perform the other task, the game is still running in the background and is utilizing system resources. The Idle Boost mod is here to reduce that. With Idle Boost Mod installed, you will be able to optimize the game performance when Minecraft is running in the background. The mod settings allow you to configure the frame rate, render distance, volume and other aspects of the game to be limited when the game window is running in the background.
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Features:
- Allows you to save system resources when Minnecraft is running in the background.
- Limit FPS, render distance, volume, etc, when Minecraft is running in the background.
Screenshots:





Requires:
Minecraft Forge
NeoForge Installer
Fabric API
Idle Boost Mod Download Links
For Minecraft 1.21.1, 1.21
NeoForge version: Download from Server 1 – Download from Server 2
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.6
NeoForge version: Download from Server 1 – Download from Server 2
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.1
Forge version: Download from Server 1 – Download from Server 2
Fabric version: Download from Server 1 – Download from Server 2
- 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.
- Downloads as 198142.mcaddon
- Download size: 24 KB
- Download link checked 26 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.