Thanks for the update @my_changed_username! Out of curiosity, have you been able to reproduce this issue with those tracks on any endpoint with Roon/Roon Remote?
There are two known issues in the pipeline for a fix concerning Qobuz transcoding. In one case, Roon itself misreads certain Qobuz high-quality tracks as MQA and incorrectly decodes them (see here: Certain Frank Sinatra Qobuz Tracks Won’t Play in Roon (Ticket In). However, ARC plays back perfectly in those cases.
The second issue is the one I mentioned in my previous post, most likely affecting you here. We’ll keep you posted. Thanks for your patience in the meantime.