Windows 11 best performance mode not in line with windows 10's?

Hello, I just upgraded to Windows 11 today, and one thing I immediately noticed was that it's best performance mode seems to be, well, not very performing. Previously I was able to run Genshin on Windows 10 in the highest battery performance mode with very smooth frames, now I'm in seconds per frame instead of frames per second. Does anyone know of a solution to this, might have to downgrade to Windows 10 if there's no way to fix it.