Command Optimiser
Reduces performance impact of command blocks by caching parsing results.
- Loaders
- FabricNeoForgeQuilt
- Downloads on Modrinth
- 13.4K
- Followers on Modrinth
- 17
- versions
- 10
- Updated
- May 28, 2026May 28
- Published
- in 2025
At a glance
Install on the server only; players don't need it
Command Optimiser
Reduces performance impact of command blocks by caching parsing results.
How it works
When running command blocks, the game parses the command text every time it is run. This takes up a lot of redundant processing time. Instead if the results of parsing are stored in memory we can speed up command execution. The command only needs to be parsed again when it is changed.
Expected performance improvements
Depending on the number of command blocks you use, the performance gains may vary.
You can safely expect that the TPS impact of command blocks will reduce by at least 10-20%. Gains will likely be smaller for commands that affect blocks than other, less intensive commands.
Testing with real-world command usage on a creative server showed a reduction of about 30% (overall 3-4% of server busy time).
FAQ
How to install Command Optimiser?
Install Fabric for your Minecraft version, download Command Optimiser for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does Command Optimiser support?
Command Optimiser has builds for Minecraft 1.21–26.1.2.
Is Command Optimiser needed on the server?
Server only — players don't need to install it