I am having the same issue. However I need directx12 because 11 doesn’t support lumen and nanite which my project has to use (I am on a team and to switch back would entirely derail the project). I have updated all my drivers and have also tried switching from studio to game drivers. I have a NVIDIA 3070 ti that has been running fine since I got it, and has no issues with frame rate or anything to be honest. I contacted NVIDIA and they were no help.