Potato FPS After installing Portal 2

KyLo_ReN

Prominent
Jun 17, 2017
7
0
510
I have installed Portal 2 and now all my games run TERRIBLY.
Specs:
i3-6100
GTX 950
Original HDD: 500GB Western Digital Green Power
Any tips will be appreciated
(I have restarted my PC and reinstalled GPU Drivers)