I have an issue with my Airport Express network and my 2nd Gen Apple TV and if anyone here has any suggestion I would appreciate the assistance. I have an Airport Express made up of two AEs, one upstairs one downstairs setup as a WDS network with MAC address filtering. When my Apple TV is connected to this network streaming any videos in my iTunes library takes a ridiculas amount of time to stream to the Apple TV from an Intel core duo 1.16 iMac. However if I close down my AE network and stream directly from the iMac all videos stored within iTunes play instantly, even HD videos. Connect to the same iTunes Library and the streaming issues arise again. I guess theres some setting on my AE network that are causing the problem, does anyone have any suggestions?