Many players have been experiencing performance issues since the pre-patch arrived, specifically with FPS drops and stuttering. However, there seems to be a workaround to disable one specific graphics option which is helping some players, although not fixing it entirely for others.

And here’s Marlamin (creator of WoW Tools) explaining the issue and solution as well:

Someone in the thread suggested setting GxAllowCachelessShaderMode to 0 (and then doing a gxRestart). Seems to have improved the situation a lot for me. Here’s what it does if 1 (which it is by default).

— Martin (@Marlamin) October 26, 2022