Command Optimiser
by Barnaby
Command Optimiser reduces the server cost of command blocks by caching how their commands are parsed.
What it does
Command blocks parse their commands again on every run, which takes server time. The mod stores the results of that parsing so repeated runs can reuse them. Testing on a creative server with real command usage showed a reduction of about 30% overall, and server busy time of roughly 3 to 4%. Results will vary with how a world uses its command blocks.
Key features
Cached command parsing
Parsing results are kept after the first run, so later executions of the same command skip that work.
Lower tick cost
Command blocks are expected to cut TPS impact by at least 10 to 20%, with smaller gains for less intensive commands.
Server-side operation
Only the server runs the optimisation, so players join without installing anything.
Compatibility
Latest build for each game version and loader.
26.x3 of 3 versions with builds
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Command Optimiser need to be installed on clients?
Which loaders does Command Optimiser support?
In the catalog
Command Optimiser is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 15,189 mods support Minecraft 26.1.2.
More from Barnaby
Similar mods
What the author says
Reduces performance impact of command blocks by caching parsing results. 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.
Official listing
- Modrinth page
- modrinth.com/mod/commandoptimiser
- Owner
- Barnaby
- Published
- 2025-09-28
- Updated on Modrinth
- 2026-05-28
- Facts verified
- 2026-10-15