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Command Optimiser

Reduces performance impact of command blocks by caching parsing results.

FabricNeoForgeQuilt
Loaders
FabricNeoForgeQuilt
Downloads on Modrinth
13.4K
Followers on Modrinth
17
versions
10
Updated
May 28, 2026May 28
Published
in 2025

At a glance

Runs on Fabric, NeoForge and Quilt
For Minecraft 1.21–26.1.2
Server only — players don't need to install it
Latest version — 1.0.4 from May 28, 2026
License MIT — free
Where it's needed
In gamenot neededOn serverrequired

Install on the server only; players don't need it

Game versions1.21–26.1.2

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

License and source
MIT Licensefree to use and share with credit to the author
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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