NOTE: This mod is currently archived as there haven't been any performance optimizations to backport in the recent time
Backports server performance improvements for the latest release from the latest snapshots.
Details about the optimizations can be found in the changelog.
Motivation/Why does this mod exist?
Snapshots (e.g. 24w33a) can contain extreme performance improvements for servers.
However it may take months until we see these improvements finally shipped in a release.
This mod contains selected extracted improvements from the snapshots and backports them into the latest available release.
1.21.1 Idle CPU usage comparisonBefore / Without mod:
After / With mod:
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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: 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 server-snapshot-performance-backports-1.21.1.2.jar — drop this file into the mods folder
- Download size: 12 KB
- Download link checked 31 Aug 2026 — working
These come from our own check of the pack file, not from the source page.