Sounds like you may need a clean Windows 10 install. Make sure device manager is recognizing your cpu correctly. My last upgrade, I had to manually delete my cpu as Win 10 was still showing the prior chip. After reboot, it detected my upgrade and I was good to go.
I have the Red Devil 5700XT and it is very quiet. I have been using Power Color cards since the 6950 and have not had a single issue with the brand.
At minute 8, Hardware Unboxed addresses how quiet the card is: