ELO - Entity LOD Optimizer
by Kubik-MC
ELO - Entity LOD Optimizer is a Fabric server mod that reduces the AI work done for entities far from players.
What it does
Entity LOD Optimizer changes how much attention distant mobs receive on a server. Its entity AI adjusts dynamically based on how far each mob is from the nearest players, so mobs out of sight do less computation. The aim is to cut redundant AI calculations and unnecessary entity updates in entity-heavy scenarios, which lowers CPU load on the server.
The mod is server-side only, so players join without installing it and only the server needs it. It needs Fabric API, and the files cover Minecraft 1.20.1 – 1.20.6 for Fabric. The code is released under the GNU General Public License v3.0 or later, and its source code and issue tracker are public. Version 1.2a for 1.20.1 is the latest file, published 2025-08-09 on the alpha channel.
Key features
Distance-based entity AI
Entity AI is scaled by each mob's distance from players, so entities far away run fewer calculations.
Fewer entity updates
Unnecessary updates for distant entities are skipped, reducing work during scenes with many mobs.
Lightweight state management
Entity state is tracked with low overhead, so the optimization itself adds little cost.
Zero configuration
The optimizer works out of the box, and no settings need to be changed before it takes effect.
Scalable behavior
The effect grows with the number of entities, so busier servers see more reduction in load.
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
Use cases
Busy survival servers
Servers with large mob farms or many idle entities can use the mod to reduce CPU load from AI that players cannot observe.
Who it’s for: Server owners running Fabric who see high CPU use from entity-heavy areas. Players do not need to install anything. Singleplayer and multiplayer use is described by the author, with multiplayer marked as untested.
How it compares
Elytra Optimizer is also server-side only and under the MIT License, but it targets 1.20.4 and does not address entity AI. String Optimizer and StackCluster Optimizer are client-side only and closed source under All rights reserved, so they affect players rather than the server. Advancements Screen Optimizer is client-side only under the MIT License, with files for 1.21 – 1.21.1. HTP CIT Resewn Optimizer is client-side only under the MIT License, with files for 1.20.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| ELO - Entity LOD Optimizer | Fabric | 1.20.1 – 1.20.6 | Server-side only | 2025-08-09 |
| Elytra Optimizer | Fabric | 1.20.4 | Server-side only | 2025-12-22 |
| String Optimizer | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-02-21 |
| StackCluster Optimizer | Fabric | 1.21.11 | Client-side only | 2026-05-01 |
| Advancements Screen Optimizer | Fabric | 1.21 – 1.21.1 | Client-side only | 2024-07-07 |
| HTP CIT Resewn Optimizer | Fabric | 1.20.1 | Client-side only | 2026-03-01 |
Questions
Does Entity LOD Optimizer need Fabric API?
Do players need the mod?
Which Minecraft versions are supported?
In the catalog
ELO - Entity LOD Optimizer is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 11,154 mods support Minecraft 1.20.6.
More from Kubik-MC
Similar mods
What the author says
✅ Reduces CPU load - entity-heavy scenarios ✅ Zero-config – works out of the box ✅ Scalable - for singleplayer and multiplayer (untested on multiplayer!)
Official listing
- Modrinth page
- modrinth.com/mod/elo
- Owner
- Kubik-MC
- Published
- 2024-09-25
- Updated on Modrinth
- 2025-08-09
- Facts verified
- 2026-10-15