I use AMD High definition Audio Device to get sound from my monitor via HDMI, couple of days ago it started to stutter during playing music. after a lot of troubleshooting, I turned to the internet and found this:
it is exactly the same problem I have. when coreclock gets higher the stutter goes away but coreclock rises when a video or a game is played, but not while playing audio, while it plays, it goes back to 300 Mhz. I have an rx 480, driver version 19.2.1. I rolled back to a previous one, using ddu. the problem still persists.
I have no problem with internal sound device. As the link suggests, it happens when the clock is down and stutters when just playing music, not video or video games.
thanks in advance.