Qobuz stops playing via Roon.

I had a lot of problems with the BlueSound Node 2.  Some folks had good luck using a hardwire eithernet cable instead of WiFi, since Roon hires requires a lot of bandwidth.    Try a temporary set up and see it if it works.  If so, you have a solution to implement.   The cable for me didn't work but it could be due to the WiFi setup I had.   However, once I went to a Roon Neculus all the WiFi problems disappeared.

Where is your Roon Core?

My Core is in the kitchen which joins the living room so about 15 feet away. 

Running on what is what I was looking for mostly. 
can you enable another device as end point and try to stream to it and see if same issues persist? This could be your ipad or phone. 
if that works then there's something with your device settings for the Lumin in Roon or in Lumin settings (Lumin app). Could be your wifi is weak if core is not wired.