I also experienced a serious drop in performance with this driver; about 12-15%. I then used DDU and cleanstall, but unfortunately no improvement. Back to the previous driver(again) fixed everything. I guess I'll wait until the next driver;-)
My system; Skikk laptop ryzen 5900HX, RTX 3080 165watt max TGP, 64Gb ram@3200mHz ,1Tb samsung 980pro + 1Tb Samsung 980 VR: Quest 2