I have this same problem and i even tried the -nojoy and such. Happens only when i turn the view my fps drops to like 3-17 when i get 60 frames staying still or just walking around. I've updated my drivers and all that but that didn't help really other than a bit of fps boost when i'm moving. I have no idea what to do now x.x Please help me, i miss playing tf2 without any problems