I’m gonna up this just this once, it’s not only those two games, it’s not even only same-engine games, like say Unity or Unreal.
It’s also apparently random as hell, because yesterday I left Omensight open for the whole day and whenever job#2 gave me a break I would play it… and I was playing nicely.
Then, when night fell, every now and then it’d happen. And the only thing every time the FPS dropped had in common was GPU usage at 100%…
also, not only the game FPS’ dropped, but performance in the whole system all around. Moving the mouse would be affected, typing would be affected, everything.