Don't know exactly how to phrase it but my laptop has an integrated graphics card and a dedicated one. Intel HD 4600 and Nvidia GeForce GT 750m. (Both updated to latest drivers) It's only Left 4 Dead 2 that resets to default video settings whenever I switch between graphic cards. (I mainly use integrated on L4D2 and switch when playing BL2). Looking through the NVIDIA control panel didn't seem to find any clues. Any help?