ARC does not play together movements of classical works like Roon, at least when playing a playlist with shuffling. Some works have movements that are split across tracks, and ARC not playing the tracks together results in the movement being interrupted.
Thanks for the report. Can you please provide a few examples of classical works that display this behavior? If they are located on TIDAL/Qobuz that would be preferable so that we can try to reproduce the issue on our end.
When the playlist was shuffled, the first track was played but not the second. This is an example of where the two really need to be played together: the first is just an introduction to the second.