Roon "Lost control of audio device"?

When Roon refers to "Audio Device" that's the Roon endpoint streamer/renderer, When you select an "audio device" in the lower right corner, it's where Roon is going, not the source of the music (i.e. a streaming service or a NAS with locally stored files if you have any). 

So that makes me suspect it's an issue downstream between your Core and your endpoint. I would look for diagnostics in the endpoint's software look for error logs, etc. and contact their support team. or post any such findings in a Roon Support ticket. Cheers,

Spencer

This happened to me when I was using a smart switch.  Now using $20 tplink dumb switch and no issues.

Spencer,

Thanks so much for your response. 

I receive the error when playing files stored on my Antipodes S40(Samsung EVO SSD). Could it be my switch or USB cable? Sometimes it plays a song without error and other times I receive the error every one to two minutes. 

Is this over Ethernet or Wifi?

How long is the wiring? Is it wired in the walls?

My Antipodes S30 and S40 are hard wired to my Chord EE8 switch. The Ethernet cables are only 1m in length. Music will not play for more than 2 minutes without receiving the error, Roon lost control of the audio device. Sometimes I loose music all together and just hear "white noise"?