Hi there, 

I recently purchased the M4 Deco Pack with AC1200 Main hub. When I set up the network to the AC1200 and run an Ethernet connection dirctly from my AC1200 to my computer, I get very similar speeds to running a connection from the modem to the computer. Therefore the internet connection is working fine. 

However, when I try to just connect to the WiFi of the Deco, my speed drops to 20Mb and then after a few minutes dwindles into the Kb. 

I think this is purely a configuration issue with the DECO but cannot work out what it might be. Any ideas? I've tried the modem in regular mode, bridge mode, etc with the same results. 

Thanks, I'm lost!

Stephen.