hi there are similar problems with some GPUs und CPUs it looks like the Ventilation starts under heavy applications so i find out that adrenalin is very quite so i use to manage the ventilation manually to run always by using the diagrams start 10% ventilation by 0 degrees and like that to avoid this high temperature issue and i used the same on bios for the cpu like 5950x and 5900x . and there is much more than this but i got no information about your system