Adding large number of songs to playlist silently fails

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I'm running Supersonic 0.12.0 on macOS 14.5. I want to be able to listen to my whole collection on shuffle and I've not found an effective way to do this yet but I'm keen to hear suggestions if there's a better way. What I've tried to do is select go to the All Tracks tab, selecting all songs and adding them to a playlist. This is currently not working and there's no error message saying why (even when running Supersonic through terminal). I'm not sure whether the issue is that I'm adding too many tracks (Over 4000) or that one of the tracks is somehow making the whole operation fail. That happens both when I try to create a new playlist and when I try to add the songs into an existing one. I've tried adding a couple of songs at a time and that does work.

As a workaround I tried selecting all songs and adding them to the queue. And while that operation works as expected, it's not quite what I need as the songs get added in order and there's no way to shuffle. Furthermore, if I go to one of my playlists I then would have to do the maneuver to select all tracks and add them to the queue which is a bit of an issue since selecting all tracks requires doing heaps of scrolling.