FramePace

FramePace is an extremely simple, 1 mixin mod for Fabric and NeoForge. It fixes a new performance regression in 26.2 where the game has horrible frame pacing when the Nvidia or Intel GPU is under heavy load.
This is mostly visible with shaders and only happens on OpenGL.

Both V-Sync and the FPS limiter are off in this example

Shader: Alpha Piscium 1.9.2
No I didn't steal the idea from Sodium

Technical information

This backports the fix to MC-307596 that Mojang implemented in 26.3 Snapshot 9 to 26.2