Ye i am having similar problems, I have had the g75vx (670mx) laptop for about just a little over a month, but now for the past 2 weeks, My framerates and overall graphics preformance has massively dropped. I went from getting on average 45 fps with bf3 maxed out, to getting 15 fps, and now i get 30 fps when battlfield 3 is on the lowests settings, I cant even max out call of duty, So if anyone has any suggestions please do tell. I have even tried to overclock the gpu, using ms1 afteburner, and no difference. I have a 680 on my desktop and I can max out bf3 on 3d no problem, so there is definitely something wrong.