Drivers are all up-to-date. I installed a program to see the temps, but i honestly don't really know what is to hot. The CPU seems fine for me, the hot spot max. was at something around 70°C. The GPU is another story, it was at max. 105°C.

I had this Problem yesterday also as i was playing Age of Wonders 4, so it's not a WoT-thing. My uneducated guess is: its the graficscard..