TooBee Optimization
by Fungus-00
TooBee Optimization is a Fabric server-side mod that reduces the calculation cost of stacked mobs, with the mob count of thousands of entities in one spot kept in check.
What it does
When many mobs of the same type occupy one block position, the mod caches the result of the full calculation for one mob and reuses it for the others stacked on that position. The author states the aim is to lower the time complexity of these calculations, from roughly O(n^2 log n) toward O(n). In the author's test, a case with 3000 wardens had its MSPT cut by more than 700, down to less than 15.
The changes target despawn conditions for monsters, mobs that hold common items and never despawn, and mobs counted against the spawn cap, which can grow endlessly on pseudo-peace farms and bartering farms. Most modifications are described as thread safe. Behavior shifts slightly for stacked mobs, which the author considers hardly noticeable to most players. Lithium is required, and the mod is published for 26.1.2 only, with 0.1.2 as the latest file.
The mod is open source under the GNU General Public License v3.0 or later, with public source code and an issue tracker. It is a dedicated server mod, and the author notes it is in early development and is updated only for the newest Minecraft version.
Key features
Stacked mob caching
Results for mobs sharing one block position are computed once and reused, which cuts repeated work on dense stacks.
Lower calculation cost
The work for large stacks is reduced toward linear time, which the author reports cut MSPT sharply in a warden test.
Spawn cap correction
Mobs that pick up items and remain alive are accounted for so the population does not grow without limit on farms.
Despawn handling
Monsters that hold common items without components still despawn under the mod's conditions, while an enderman holding listed items does too.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
How it compares
AutoTune FPS is a client-side optimization mod for Fabric and NeoForge, open source under the MIT License, covering 1.21 – 26.2. Xylene is a client-side Fabric mod for 1.21.11 only, under All rights reserved and not open source. Statestream is server-required with client optional, open source under the MIT License, and covers 26.1 – 26.1.2 across four loaders, unlike TooBee Optimization, which is server-side only on Fabric.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| TooBee Optimization | Fabric | 1.21.10 – 26.1.2 | Server-side only | 2026-10-14 |
| AutoTune FPS | Fabric and NeoForge | 1.21 – 26.2 | Client-side only | 2026-09-27 |
| Xylene | Fabric | 1.21.11 | Client-side only | 2026-05-21 |
| Statestream | Fabric, Forge, NeoForge and Quilt | 26.1 – 26.1.2 | Server required, client optional | 2026-05-24 |
Questions
Does TooBee Optimization require Lithium?
Does TooBee Optimization need to be installed on the client?
Which Minecraft versions does TooBee Optimization support?
In the catalog
TooBee Optimization 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.
Similar mods
What the author says
The mod is at a very early stage of development, and please notice that it is dedicated server only. Support for the newest minecraft version is updated if and only if TooBee server updates, and yet older version of minecraft is not supported.
Official listing
- Modrinth page
- modrinth.com/mod/toobee-optimization
- Owner
- Fungus-00
- Published
- 2025-10-24
- Updated on Modrinth
- 2026-10-14
- Facts verified
- 2026-10-15