Registers Minecraft's main thread as a game with MMCSS on Windows, which helps to improve performance and general smoothness while multitasking. The effects of this are most significant on older or lower-end hardware where system resources are scarce, and may not be as noticeable on modern CPUs.
Because this mod does not depend on any Minecraft code and only relies on Fabric to call the Windows API while loading, it works on all* versions, including legacy ones via Legacy Fabric and Babric. Additionally, as it simply does not do anything when running on other platforms, it is safe to include in packs.
* Java 8 or above is required for legacy versions.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: rd-132211, rd-132328, rd-20090515
- 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: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as WindowsPriorityBoost-1.0.0.jar — drop this file into the mods folder
- Download size: 3.0 MB
- Download link checked 13 Sept 2026 — working
These come from our own check of the pack file, not from the source page.