I think everyone has a different experience. It might be related to their home network/modem/router.
I have AT&T 1Gigabit Internet.
I use Yamaha MusicCast all the time to stream music from my iPad and Phone. My daughter also uses AirPlay to stream music from her iPhone to the Yamaha.
It has been working perfectly. Never a problem.
When I was using the Denon AVP-A1HDCI and AVR-5308CI, they always had inconsistency issues with streaming.
But again, I think it depends in your own home network, modem, router, internet.