When I stream movies from iTunes to my iPhone 4 via Airplay, and connect the iPhone 4 to my TV with the Apple A/V dongle, I get choppy playback...especially with 720p movies (downloaded thru iTunes). Yet when I use the exact same setup, except streaming with Air Video instead of iTunes/Airplay, they play really smoothly. Can anybody think of a reason why? Is Apple's coding just that much worse than the developers of Air Video?? I don't get it.