Hi,
This is a bit similar to:
https://rog.asus.com/forum/showthread.php?42395-Xonar-Phoebus-causing-audio-pops-and-drop-outs-with-...If got my Phoebus some years and use it with Yamaha AV receiver. To save cabeling I just Digital Live (the only option available when using Windows 10 and the official drivers Version 4.29 from 2016/09/06).
This used to work a long time with my Asus Sabertooth Z87 (I7 4770 K CPU).
Over the weekend I changed the mainboard to Asus PRIME X570-P X570 (Ryzen 3700X Board). Everything worked fine with the output until I started up Fallout 76.
Sound works flawlessly within the title screen and within the map/menu but in normal playing you might hear a snippet every second or so, it seems the card does not get enough ressources to do the DDL functionality.
I restarted the PC without any success. Currently I have cabled the three analog outputs but as I have to set the AV to a direct mode (bypassing all advantages of the AV), and due to additional cabling I'd like to have the SPDIF Dolby Digital Live back.
The Tower is equipped with 4 fans, and has some space to my Sapphie 590 graphics card. The same setupworked fine on the Intel board, I even did not had to reinstall Windows 10 x64 1903, therefore the system is pretty much the same except board, memory and CPU.
Any suggestions?