PC Completely freezes after only 10 mins - Hard shut down

RTS games tend to utilize more CPU power compared to other games but that's no excuse to have your CPU overheat to those extreme temps. That's not hot enough to cause permanent damage to transistor switches in the CPU but just be careful, your PC will probably shut down without warning.

You probably put too much or too little CPU paste on, have lots of dust, fan is broken, or you just have very poor airflow to the case.