Hello, I have a fan management problem on my rx6900xt, the fans are running either at full speed or not at all (updated drivers). On AMD software even in silent mode the fans are at 3000rpm. When I play (far cry6) it runs for 2 minutes at 3000 rpm then 5 minutes at 0 rpm.
Maybe you should check your motherboard BIOS to see if there are any settings related to the GPU and fan control. I don't know if you will find any though.
As Albert Einstein said, "I could have done so much more with a Big Al's Computer!".