Using my Gigabyte A5 K1 for one year I noticed that my GPU fan speed can sometimes fluctuate heavily, very noticeably by ear, in short intervals, like every few seconds. Sound varies from very silent to the max. It's happening quite rarely, at worst, once a week, but usually it not bother me. The most interesting that Clevo Control Center shows that CPU fan running only at 30% speed, but it fixes the RPM changes. It changes from 2600 to 3200 RPM every few seconds. The GPU's temperature is stable. The only solution that I have found is to shut down the laptop and leave it for 10-15 min. Any ideas what's going on?