I've been seeing an issue with clock speed (sometimes when windows starts/logs in), specifically, it will sit at 1ghz max and never go above that maybe 1.2 if that.
This seems hit and miss, the only fix I've found is to go to control panel > power options and set the power plan back to balanced and high again. It seems changing the power plan likely corrects some issue in windows?
No idea what to do next in terms of getting this fixed long term: I doubt a BIOS update will fix this right?
Motherboard: ROG Crosshair VIII Hero (latest bios).
RAM: Corsair Dominator 3600mhz C16 (i think)
GPU: Gigabyte Aorus 1080ti