Low FPS then sudden crash

This seems to be a new issue for me, the main game I play on my computer Overwatch 2 can’t seem to use the GPU correctly (is what I’m assuming) I have a GeForce RTX 3060 and a beefy computer but I rarely get above 50 fps, sometimes it crashes or drops to something like 3 or 6 fps. The GPU temperature I’ve noticed stays at 60 F but never goes above that. When I turn my computer on and off it fixes it. Any ideas what may be happening?

Are you checking the CPU temperature as well? Fan speeds for other hardware? How about the power supply voltages?