I have several movies that are in my itunes that are in hd. My problem occurs when I try to stream them to the atv2. I can successfully stream SD content and even videos imported from my iPhone 4 from iPhoto. I have had success on a few occasions but the time it takes to buffer is absolutely ridiculous. My Internet speed is irrelevant I believe but just in case it is rios 25/25 The network is a wireless N using a d-link 655 with an iMac, a few sonos ZPs, and a MacBook pro connected to it. I'm baffled. If I disconnect the apple tv from power and then plug it back in I have had mild success but still it's not very convenient. Any ideas?