@curiousjim No, it’s not a Roon thing. When I have a track that won’t play I can duplicate the problem using Qobuz Connect, bypassing Roon entirely. Roon has already stated they are in communication with Qobuz and it’s a problem on Qobuz’s back end. Just because you haven’t had the issue yet doesn’t mean you won’t. It depends on tracks you select and the timing of it. It’s all hit and miss.
Apparently, Qobuz is changing their streaming cloud infrastructure and having growing pains.
Edit: I just proved it to myself again. A track I was playing on Qobuz/Roon stalled and refused to play unexpectedly. When I play it on Qobuz Connect, it also refuses to play, but just goes to the next track instead. So the only thing you might be able to blame Roon for is not handling Qobuz' fail gracefully, but that's an API problem. The root cause is still clearly on Qobuz's backend, since it occurs with their own APIs as well.