TensuraAiFix

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.