I have noticed the source engine having problems with mutli core options. I have it with L4D now. Where the frame rate is well above 60 fps avg 80-120 but the game seems jitter and jerky. Like sudden movements on mouse without intentionally doing it. Also panning left to right you see it is not smooth. Skips like a record. Since enabling it on TF2 I saw a big jump in fps from 90-130 to 120-200 but was getting the same issues like in l4d. I have been talking with Valve and XFX my video card manufacture. Trying to find if the problem is the drivers, video card, or maybe just do a reformat and start over. Since it is barely being tested that could be why so many people are having issues. Heck even foxtrot who has multi-core was telling me on vent it wouldnt even let him change the option after updating the game.


















