You have a DAC which appears not to be supported by Linux. You haven’t responded to you’re earlier posting. Without a log we can’t help you.
Without a log when scanning fails we can’t help much. I have a library with +67000 tracks (3500 albums) on my NAS and have no issues. Most issues with a failing scans are due to broken tracks. But we need a log so we can investigate.
This is in the backlog of Volumio to resolve. Paginating is failing for some DNLA servers. If Minim serves it’s data in blocks (pages) it can go wrong. Seems that is happening.
Also for this issue we need logs. When you play tracks with the native Tidal integration and it breaks.