I'm on the West /Left coast. Last October for a few weeks Qobuz had playlists and other issues when using roon. They finally got that sorted. Since then save the odd single track (corrupt file?) issue Roon running Qobuz has been chugging along fine including a hundred hour new drivers break in.
Those of you with persistent problems, first and foremost, have you queried the Roon Labs Community? You will get help. Great help too.
Have you run speed test to see if you have adequate bandwidth?
Are you on wifi or hard wired? (See speed test.)
Have you rebooted your roon server and endpoint(s)?
Updated?
Checked DownDector?
Have you signed out/in?
If using a computer as a roon core does that also serve other functions as well?