Entity Distance Hider

• Client-side Fabric mod for Minecraft 1.21.1 that pauses ticking for mobs below the player until they enter the camera's view. Drop the JAR in your Fabric client's mods folder to use.
• Uses a mixin on the client world tick to skip updates for mobs whose center is below your eye level and outside your current field of view; ticking resumes as soon as you look at them.
• Player mounts and passengers are ignored so riding stays smooth; only mobs are affected, leaving players and projectiles untouched.
• Intended to reduce client CPU/GPU workload when many mobs are beneath you. Server behavior is unchanged.
• Current limitations: visibility is based on your view cone (not line-of-sight through blocks), and freezing only applies to mobs below you. Future improvements could add configurable angles/heights or a toggle keybinding.