I have a first time build:
3950x, radeon vii, torus master x570 64gb ram....
I used open core to install caterlina , it only worked after help from amdosx discord Pavo. he Laos gave me a Mojave efi.
catalina system was not stable, re boots, sound dies, safari refreshes page every 2 mins , boot up next day won't boot properly have to reboot few times. .. I tried Mojave too but same problems .
do any of you 3950x users have a stable system ? I'm beginning to thin its not possible for me