Check the release notes for your specific engine binding (C++, C#, Lua, etc.).
: Open your launcher and start the game using the correct mod loader profile. Common Troubleshooting install playeranimator version 099 or later better
If your project previously struggled to hit 60 FPS, effectively doubles your animation budget. Check the release notes for your specific engine
If you are using a proprietary engine:
1.21.4. player-animation-lib-fabric-2.0.5+1.21.4.jar. Latest release. R. 1.21.4; Fabric; Oct 4, 2025 ... Player animation library, CurseForge KosmX/minecraftPlayerAnimator: Minecraft 1.16+ ... - GitHub 2025 ... Player animation library