Bad performance after the maintance

Before the maintance I was constant 90 fps and even in chaos dgs etc it barely dropped to 75 at the worst of times. Now I constatnly drop below 60 even in stronghold with a lot of micro stuttering like wtf? I did everything any sane pc gamer would do like drivers win updates nvidia settings steam integrity check virus scans etc etc. literally nothing. Like wtf?

check settings too,it reset that too,like graphics settings in game