Do you know what port range Roon for Linux uses, and if so whether there is some range specifically used by Qobuz and not Tidal.
I know you don’t believe me, but in the past month I have let my Qobuz account expire (since it doesn’t work properly), and used exclusively Tidal. I have had exactly 0 issues since. It’s a Roon + Linux + Qobuz thing. My network is fine.
Roon use random ports at startup and the ports Roon uses can change at any time, so we suggest adding an “Application Level” firewall exception for Roon. If you can’t set up an application-level firewall, then this thread might help: