I am running the Wraith Prism cooler on my Ryzen 7 3700X at stock clocks. The fan is constantly fluctuating, between 523 and 1165 RPM's. On the desktop it isn't noticeable. I have been watching it in HW monitor since about 15 mins ago when, during a gaming session of PUBG, the fans were constantly fluctuating and without warning the computer shut down. Any ideas?