Here is a brief description of my build:
I9-7980XE
32 gb of Corsair Dominator Platinum at 3200.
Rampage 6 extreme.
An Aorus gaming extreme 1080 ti
1000 watts cooler master v1000
Now here is the problem:
While gaming I would get really severe performance dips, even in not demanding areas. Its completely random. For example, idling at the menu in hearthstone the fps would randomly dip from 144(screen refresh rate) to 50, climbing back to 90 before getting back to 144 before doing it again. Playing doom 2016 (opengl mode) shows high CPU frame times jumping from 4 ms to 29 ms and the average being somewhere in-between causing the fps to jump from 80-90 to 160-180 rapidly. Sometimes my clocks would default to 1.20 MHz after boot for no apparent reason and stay there.
The part making me want to tear my hair out is under synthetic loads, there is no fluctuation or dips in performance or clocks. Attached is the cpu test from 3d mark.
Here is what I tried:
Tried to solve any thermal issues, I found none.
Power profiles seem to be set to max performance.
overclocking or keeping the speed stock makes no difference.
updating drivers/bios etc.
I have no idea whats wrong, any hints is appreciated.