Have you reset the BIOS to optimal defaults or whatever it's called in your BIOS? Also your CMOS battery might be failing.I recently upgraded my cpu to an Amd fx 8350 from a phenom 2 x4 and i realized video games started to run worse than before. Can anyone help ?
motherboard : 970a-d3
Gpu : Radeon Rx 560 (latest drivers)
8 gb ram
Cpu : Fx 8350