Hi! My first post here, although I've been lurking for ages following this thread. I got my Poly earlier this week and have spent half my time smiling like an idiot at the truly amazing sound coming out of the Mojo/Poly combo and the other half cursing the drop-outs, flakiness and general hassle of the whole thing. I've had constant trouble keeping a decent connection, whether using Roon, uPnp or Airplay. It's been especially frustrating when trying to stream from Audirvana 3.1 -- my idea of audio heaven when it actually works -- where I'd get maybe 30 seconds of music before the stream started stuttering and then stopped completely, with the P status network light going out for a few seconds and then coming back on. Not being overly techy, I was tearing my hair out trying to figure out what the fk was going on and starting to have seriously dark thoughts towards poor Poly.
Just in case some others are experiencing similar problems, I wanted to share a really simple solution that seems to have worked for me. I'm on BT Infinity and have a SmartHub router. All I did was go into the Smart Hub Manager and do a re-scan of the wireless channels. Both the 2.4 Ghz and 5 Ghz channel numbers changed after the scan and I saved out with the new settings. That was about an hour ago and I'm currently sitting here listening to Jack Johnson on Tidal Masters via Audirvana with rock solid, amazing sound. Enjoying it so much that I've yet to try Roon or uPnP, but I'm pretty confident that the connectivity issue is solved.
Hope this might help anyone experiencing similar problems.