Apple TV Airplay Mirroring Fails w/iPhone 6+
Using Apple TV 4 (software up to date) and iPhone 6+ (current iOS) Airplay works slowly or not at all.
Selected visual content lags (audio ok), with Vimeo content only first frame of video is visible -no motion. Content viewed on iPhone only (no Apple TV) is flawless.
I have a very fast (comcast) cable connection. Recently installed new comcast modem. I primarily stream content from Watch TCM (the only option for this source) and assumed the problem was with the TCM app. But Vimeo is now inoperable via Apple TV. As stated above, there is no problem viewing streaming content on iPhone itself (not mirrored to Apple TV) Content selected via Apple TV remote operates normally (not mirrored from iPhone). No problems viewing content directly through comcast cable stations. So by elimination, I am guessing the problem is between iPhone & Apple TV.
This problem is fairly recent as operation was mostly better when Apple TV first installed. Problem PRECEDED installation of new Comcast Modem.
I checked the Wifi settings, and all appears to match on all devices. I can't think of any other options to check, but I'm not a tech. Solution options appreciated!
Apple TV, iOS 9.2, Apple TV Gen 4 32Gb