I'm trying to streamline the network t my parents house. They live in a large house with many walls to break up the wifi signal. Here's the setup: middle-ish part of the house has the cable modem which goes into an AC Airport Extreme. Ethernet from there goes to a switch which disseminates Ethernet all throughout the house. Now on one end of the house there is another AC Airport extreme. This has a line in from the main switch and also serves as a hub for a few devices at this location. On the other end of the house there is a third AC AirPort Extreme with a similar setup to the second. Lastly, there is an old 1st gen airport express in the front room setup to just join the network in order to AirPlay music to the sound system. The main Airport Extxreme is setup to create a network. The other two extremes are setup to extend this network. We are having performance problems however. Do you think this is due to having too much equipment? Or could it be that the two extremes are setup at "extend" when they should be setup to "create a network"? We just bought the two new Extremes yesterday from he local Apple Store, so we have a couple weeks to return them if need be. Side note, anyone else have a ton of issues with Airport Utility? Constantly dropping devices, saying their not connected, etc. Thanks for any help!