I have a new Hub 5b. My internet connection is rock solid at 58Mb. If I plug in an Ethernet cable I always get that speed.
However the wifi is a complete mess. I have separated out the 2.4 and 5Ghz channels to different SSIDs but the problem I'm experiencing affects both bands.
Basically if I restart the Hub or change the wifi channel the speed over wifi shoots up to 57Mb. After about 3 hours it drops down to 1Mb on all devices where it wi remain until I either restart the Hub again or log in and change to a different wifi channel. Any ideas?!