Hi, I've got a ZD1200, 12 R700s, 2 T300s, and an Apple Airport Express. Everything is working nicely. When using airplay from my iPhone 6, The music streams well when I'm near one of the access points. When I'm in an area with limited wifi coverage - ~20db, 20% signal, it still works MOST of the time, but will occasionally glitch. It is very unreliable. Is there anything I can do improve the streaming, other than adding new access points? Looking to get this resolved, as it's been quite troublesome for this site. Thanks!