Hi, For several months now my 15" Macbook Pro has been having what I think is throttling issues while playing any game at any quality settings on Windows 8. I have the mid 2012 non-retina Macbook Pro with 8gbs ram, i7 3720qm 2.6ghz , gt 650m 1gb and 750gb hdd. Games tend to run well for about 2 minutes before they start having huge lag spikes every few seconds going from around 5-10 fps to 30-50 fps. This makes nearly every game unplayable for me. Attached here is a screenshot from Nvidia Inspector showing what happens when I play Hitman Absolution (or any other game most of the time): View attachment 468499 As you can see I get constant lag spikes from 725 mhz core clock to 270 mhz. I am not exactly sure what is causing this. It could be a temperature issue because I think it starts throttling whenever it gets around 80c but I am not really sure. I am using the NVIDIA 335.23 WHQL Drivers which have had a clean install. I have set all games to 'prefer maximum performance' in the Nvidia Control Panel. This could also be a driver issue because I remember being able to play all games properly without lag spikes where the gpu would hit 90c without throttling several months ago. I can't remember too well but I think this happened after I upgraded from the 306.97 drivers although I reinstalled them which yielded no effect on the throttling. I also did a SMC and PRAM/NVRAM reset over 5 times which still did not fix the performance. Other suggestions like forcing the pstate and core clock in Nvidia Inspector have also not worked. So does anyone have any suggestions or possible solution to this problem? It is extremely annoying as all games are basically unplayable.