I now have an Apple TV and Airport Express connected for streaming purposes mainly, but also in the case of the apple TV to show photos off the ipad and iphone i have. However, there seems to be a real lag between what is happening on device and what is happening on the screen. I'm guessing this is down to the speed of my home network. so, i guess my questions are: 1) am i right in thinking the home wireless network speed can vary 2) what is the best router to solve this problem , or is there another way to boost speed. Music streaming seems ok. . Thanks James