Is anyone else having issues with AirPlay? I have a Retina MBP that I used AirPlay for all the time on my 3rd gen Apple TV & it mirrored perfectly. When I plugged in the new ATV and mirrored the built in display to my tv, it mirrors to the tv at a lower resolution. There are black bars on the left and right side of the screen while the ATV3 encompassed my entire tv screen. I can't seem to find any setting that addresses this so I'm wondering if this is a bug or if there is something I can do?