Bad FPS in ground battles

same settings, same maps, but after the raytracing update I have noticed a 20-30% drop in FPS in ground battles only. What happened?

edit: issue started happening at all times, not just ground rb, stopped for a while, then started happening again. My PC might just be cooked.

another edit: seems to be linked with issues with nvidia geforce experience happening at the same time, uninstalling seems to have fixed it.

War Thunder QA team working.