Each time Minecraft wants to draw a frame, ALL entities recalculate the angles of each of their limbs. However, due to a huge oversight by Mojang, MANY of these calculations can easily be sped up, and are sometimes flat-out unnecessary. FastAnim Mod (1.20.1, 1.19.4) fixes that by making PI/180 a stored value that isn’t calculated multiple times for each entity, using variables instead of repeated calculations, and more. This, when applied to all entities, does indeed speed up performance, whether it be a small bit or a noticeable bit, depending on the surrounding entities and your PC.

Features:

  • Instead of recalculating the rotation of each joint for every entity in each frame, FastAnim “caches” values like PI/180 to avoid redundant calculations for each entity.
  • This mod aims to eliminate unnecessary rotation, setup, or calculation steps that are overwritten—meaning if a calculation is not needed or is immediately replaced, the mod disables those redundant parts.
  • In scenarios with many entities present (e.g., farms or crowded mob areas), reducing animation calculations helps lighten the CPU/GPU load, resulting in smoother performance.

Screenshots:

Requires:

Fabric Modloader

Fabric API

How to install:

Click the following link to view details: How to Install Mods for Minecraft Java Edition on PC: A Beginner Guide

FastAnim Mod (1.20.1, 1.19.4) Download Links

For Minecraft 1.19.2, 1.19.1, 1.19

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.19.3

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.19.4

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.20

Fabric/Quilt version: Download from Server 1 – Download from Server 2

For Minecraft 1.20.1

Fabric/Quilt version: Download from Server 1 – Download from Server 2

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