TensuraAIFix is a lightweight, server-side performance patch for the That Time I Got Reincarnated as a Slime (Tensura) mod family. It trims the heaviest AI behaviors that cause pathfinding spikes and tick lag.
What it does
- Removes Tensura’s heavy PassiveMeleeAttack goal at runtime (the main pathfinding spammer).
- Keeps combat intact
Preserves flying/special AI (skills/abilities are left alone; the mod no longer nukes entire AI selectors).
Disables AI for “clone” entities to stop runaway CPU use.
Safety sweep every ~2s to re-remove expensive goals if another mod re-adds them.
Fixes each mob once (NBT flag + in-memory session cache) to avoid repeat work.
Quiet by default: minimal logging and a small “Fixed X mobs” summary ~10s after startup
Results (typical)
Smoother TPS during big fights or dense Tensura spawns.
Far fewer GroundPathNavigation spikes in spark reports.
Mobs still move, target, and attack—just without the pathfinding thrash.
- This mod does not change spawn rates, damage, drops, or content. It only adjusts AI goals at runtime.
Does it need to run on the client? A: No. Server-side is enough. Singleplayer is covered via the integrated server.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.19.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as tensuraaifix-1.0.1.jar — drop this file into the mods folder
- Download size: 10 KB
- Download link checked 27 Aug 2026 — working
These come from our own check of the pack file, not from the source page.