I’ve never waited long enough to see what happens, but I can try. Once that happens, I can go back and choose a different playlist, so ARC still responds.
Those same playlists play fine on ARC at home, it seems to be related to Android Auto.
We live in the north Georgia mountains, and cell phone coverage can be sketchy, so because of that I have about 20 or so playlist downloaded to my phone. The other playlist work without issue.
The two playlist that won’t work correctly are 18GB (558 files “supposedly”) and 19GB in size (618 files). I have a few other playlist that I’ll try today that are 15GB, 11GB, and 9GB. I know the 5GB playlists work, but can’t vouch for these larger ones until I give them a try. I’ll let you know what I find out.
We have a ticket in for this issue and you can expect improvement or resolution with the next release. If you’re eager for a fix, please try merging to our Early Access testing branch, where we are testing the solution.