Good news! I deleted my Library/Network Share in BluOS and listened to Roon. Clean sound; no breakup or crackling. So then I rebuilt my Library in BluOS. And the sound remains rock solid. Wow, I would never have thought that the library in BluOS could affect the sound quality through Roon. But there it is. I’ve been listening for a couple of hours. No break up. Thank you, Otto_Wilhelm and Robert_F.