ok every time I launch portal, I get major lag even though tf2 and portal use the same graphics engine. I am using th BFG 8800gtx os2 edition If you need more info I can give it to you
whats the specs on ur system? thats 1 of the big things that people always need to point out once they post about any kinda computer issue (well most of the time anyways). but ya, post ur specs, then we can help u further.
hmmm i think with the 8800gtx it wouldnt be the graphic settings too high, so i dont think you would have to change that. I have never had the problem but what do you mean by lag, what exactly does it do?