Why does Apple Music keep stopping on my Alexa?

I'm playing Apple Music on my Bose 500 via Alexa. All devices and apps are up to date and the Wifi speed is excellent. Apple Music has been correctly configured; why, why, why then does the music keep stopping/starting, almost as if there is a buffering issue? Searched everywhere for a solution to this annoying problem - Nada! Any techie advice welcome!

[Re-Titled by Moderator]