I think it could be a temperature issue indeed... I never thought it would be CPU and maybe it makes a little sense about a year ago I was playing F1 2012 and Burnout Paradise with this exactly issue as I told before, the problem was solved when I put the rear of my notebook above something, in order to let the air flow easier ok... however months ago I started to play F1 2013 and I noticed the problem was backto my surprise, no lags have appeared playing Burnout, so I thought the problem was the F1 2013 game reading the FAQ, I decided to play F1 2013 in safe mode and no lags were registered, BUT when I play with Intel GPU, in regular mode, no lags were registered too! (but the FPS average is low) honestly, I don't have any clue for what is the problem!