I have recently built a new computer with an I7-6700k and h100i v2 cooler but have noticed the temps running high under load and have massive fluctuations. The temps are constant and fine while idle but even after applying new thermal paste multiple times the temperatures are still fluctuating. The temps are increasing from 40°C to 80°C instantly and then dropping back down repeatedly. I don't know what could be causing this and any help is greatly appreciated. After looking more into it I have noticed from the games I've tested that this only happens when in CS:GO.