My laptop was running really hot after i got this game too, it was to the point of overheated shutdowns. Ive cleaned it twice and reapplied thermal paste on the GPU and the CPU. that did the trick for a couple weeks. ultimately i eneded cutting away the bottom of the laptop where the CPU and GPU was near and got a giant twin fan self plugged cooling unit. i was given this from a coworker he said it was like 35-40 bucks on ebay. that got rid of any heating issues i had with my laptop. since i dont travel with my laptop, mostly game in a stationary location cutting the bottom of the laptop wasnt a huge concern for me. My finger tips are no longer over sensitive from playing on a frying pan.
on another note, using moistened q tips and actually cleaning the fan blades on the laptop fans made a big difference. they have collected a lot of stuff over the 4 years ive owned this computer.