OPTServer v1.09 - Release Changelog

A lightweight, powerful server-side optimization mod for Minecraft Forge 1.20.1.

What's New in v1.09

1. Auto "Anti-Tick-Slip"

Automatic World Time Freeze: When the server becomes empty, the mod persistently saves the game time (gameTime/dayTime) and the real-world logout timestamp. Auto-Restoration: Upon player login, if the server was empty for >= 5 minutes, the mod automatically rolls back/restores the game time and day time to the exact moment of logout. Safety Window: If players reconnect in under 5 minutes (quick crashes or restarts), time proceeds normally to prevent rollback issues.

2. Built-in Lag Profiler (/opt find)

Instantly scan loaded chunks across all dimensions. Displays the Top 3 Chunks with the highest entity count (dimension, chunk coordinates, and exact block coordinates) so you can hunt down mob farms or lag spots. Displays the Top 5 most numerous entity types globally.

3. Dynamic Mob Capper (/opt moblim )

Dynamically limit the maximum number of Mob entities allowed inside any single chunk. New spawns in overloaded chunks are automatically canceled (ignores custom-named mobs/pets so your named entities are always safe). Adjusted in-game via /opt moblim .

4. Smart Villager AI Optimizer

Automatically freezes the pathfinding and brain tick processing (NoAi = true) of stationary Villagers (speed ~0) to eliminate trading hall lag. Seamless Trading: Automatically restores full AI (NoAi = false) for 60 seconds whenever a player interacts (right-clicks) with them, allowing smooth trades, restocking, and job updates before refreezing them.

5. Critical Bug Fix

Fixed Inactive Event Loop: Resolved a major issue where the automatic dynamic optimizer (onServerTick and onServerStarting) never executed because the CommandsHandler class lacked the @Mod.EventBusSubscriber annotation. Auto-mode now works perfectly on server startup!