PC game just started freezing ... please help

I was able to play KI on my pc for past month and a half. Just recently I did the “run performance test” and each time half way through it freezes. I can’t play ranked because its asking me to run this test even though I did it when I first got the game and have played ranked matches before… I dont know if its a recent Nvidia patch, the recent gargos update… Anyone have any suggestions?