Sometimes my AppleTV stutters or pauses when streaming video off my iMac. I'm on a wireless b/g/n router (Airport Extreme). The connection between the Apple TV and the router is "N", as well as the one between my iMac and the router. movie specs are 765 kbps 664x274 resolution This is well within the AppleTV's capabilities if I am not mistaken. The AppleTV is 6 feet from the wireless router. iMac is through a wall and 15 feet or so.