Entity Collision FPS Fix — Modern Port for Minecraft 26.3 (Fabric/NeoForge)

Fixes entity collision FPS degradation.

When many entities collide, vanilla collision resolution can tank FPS. This modern port for Minecraft 26.3 keeps collision handling in the main thread but measurably cheaper, smoothing out the hit.

What it does

• Corrects entity-vs-entity collision resolution to avoid the quadratic cost spikes that tank FPS in dense scenes
• Loadable on 26.3 (Fabric) with a verified runtime test

Modern port notes (26.3)

• Java 25 · Fabric Loader 0.20.1+ · Fabric API 0.165.0+26.3
• Built and verified in CI via GitHub Actions, including a headless runtime test that launches the client, joins a world, and quits cleanly

Installation

1. Install Fabric Loader for Minecraft 26.3
2. Install Fabric API
3. Drop entitycollision263-*.jar into your mods folder

Original mod & credit

Unofficial modern port by Itamio of Entity Collision FPS Fix by CorgiTaco. Original: https://modrinth.com/mod/entity-collision-fps-fix See NOTICE.