DisplayPort sound in Catalina current guide?

I'm using KVM to run :ac Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina, and it's 100% working except sound. It says I have 5 HDMI ports, up nothing comes out. I have verified it works in Windows. The graphics card is an AMD rx570.

It's 100% stock as well. Are there Kexts I need still? I thought with DP or HDMI I didn't need lilo or whatevergreen. Is that still true? Also, do you install in the clover dirs, or directly to the system - do the new security features disable foreign Kexts now?

Author: @Plymptonia