Amazon instant video / dropped connection when using airplay

Hi there,

Anyone else experience a similar issue? I have an Airport network in my house (mix of 2nd generation airport extreme and latest model w/802.11ac). Latest model is doing the DHCP and connected to an Arris cable modem. I have a hardwired AppleTV. If I try to use airplay to send my amazon instant video from phone to AppleTV, my iphone seems to drop the wifi connection. And sometimes it looks like the connection w/my cable provider (TWC) gets reset. This does not seem to happen if I'm just watching Amazon directly on the phone, but happens as soon as I try to use airplay. Thoughts? Advice? Thanks!