From 300 FPS to 100 in OW, Huge drop.

Specs i5 8400 Gtx 1080 8GB Ram

I used to get 270-300 FPS now I cannot even get 140 FPS in a matter of a day, yesterday everything was okay but today something weird happened.

GPU temp while gaming 70-77 CPU temp: 72ish

I updated my windows and gpu driver through GeForce experience and since then my pc went potato