Do you receive a crash report prompt from the Apple OS when this occurs? Or is Roon no longer listed in the running applications entirely (press Option (or Alt), Command, Esc (Escape) and have a look).
It might be more difficult to test this, but does playback stop overnight as well? Try queuing several albums in a row, playing to the System Output or a Roon Remote with the audio muted. If the audio stream is retained, but the UI component of Roon has gone down, then you’re encountering a longstanding known issue for which we have a ticket.
When this happens, Roon is no longer listed in the running applications. From memory, playback continues as the server is running on a separate machine, but I’ll try and test this again.
I did have this issue in the early days of the M1 processor, but it seemed to get fixed after a bit.
Thanks for the update, @JeremyAH, we’ll have a look at diagnostics on our end in the meantime as well. We’re tracking this issue, so if we don’t respond right away, it’s still in the pipeline internally.