UltraAFK: Anti-Lag & Optimizer

Tired of griefers dropping your server's TPS to single digits with piston loops or arrow machines? UltraAFK is a lightweight, no-nonsense optimization plugin built for Paper that handles the heavy lifting so you don't have to. No bloat, no crazy dependencies. Just pure performance.

🚀 Features

• Next-Gen In-Game GUI: Manage everything on the fly using /uafk menu. Features a modern Dialog API interface on 1.21.7+ (with seamless transitions and direct input forms) and a classic Chest GUI fallback for older versions.
• Anti-Lag Machine Protection: Automatically freezes malicious piston loops (with a configurable cooldown), blocks soul sand + arrow lag machines, and limits snowball spam per chunk.
• Smart Item Clear: Cleans up ground items only when farms overflow. It calculates the actual amount of items (not just stacks) so your server stays clean without deleting valuable player drops.
• XP Orb Stacker: Groups XP orbs within a 12-block radius using spatial hashing to drastically reduce entity ticking lag.
• Smart AI Freeze: Stops mob AI near AFK players to save resources. It safely ignores named/tamed mobs and won't freeze mobs near active players.
• Fast Travel Protection: Smoothly scales down velocity for Elytra and Ice Boats if a player exceeds a certain blocks-per-second limit, preventing chunk generation lag.

🛠️ Commands & Permissions

Command · Description · Permission
/uafk reload · Reloads the configuration file. · ultraafk.admin
/uafk menu · Opens the interactive settings GUI. · ultraafk.admin
/uafk · Shows plugin info. · None

⚙️ Requirements & Compatibility

• Server Software: Paper (or forks like Purpur).
• Minecraft Versions: 1.21.3 up to 26.3+ (Single universal JAR).
• Java Version: Java 21+ (Runs perfectly on Java 25 servers).
• Note: This plugin uses asynchronous pipelines and synchronous entity scans to ensure maximum performance without breaking the Paper API rules.