hey brother did you put the power limit on the max ??
I mean 15% or you let it by default 0% ?
i have exactly the same problem with Fornite for example.
i have 300fps and it drops to 50 fps. its very unstable.
I got a xfx merc 6800xt my frame rate just stays are 74fps on every game I play yet I run a benchmark test I get 2444mhz and 230fps anyone have and idea how to solve it ive tried changing setting and I still can’t seem to get it going the fans barely turn on on most games