I have a VirginMedia connection using one of their "Super Hub"'s, their wireless configuration is turned off and I connect my Airport Extreme via RJ45 cable. I connect my iMac from the Extreme via RJ45, and it is configured for wireless also. Connected to the Airport Extreme extending my wireless network is an Airport Express. My internet connection is over 60 meg and that's all ok, but the other devices using the Airport and the Extreme run very slow , so much so that it is impossible to watch streamed TV to any device.
I would like to look at any logs that the devices create to see if I can see a problem??