So it appears setting explicit channels has fixed the issue. Thanks for the tip. Is it worth adding to the KB article that this should be checked as well to get the router / AP mode working together?

@terziyski Thanks, will try that this afternoon and report back. Interestingly, my laptop still connected to the router had the issue with decreasing Mbps whilst performing a speedtest and poor...

@terziyski Just confirmed LAN1 which is in use for the AP mode C6 on my main router has negotiated 1000Mbps. I made sure I am using CAT6 cabling as well. Does it seem that I have the config correct?...

Hi, Having a few issues trying to run x2 Archer C6 routers in my house. The setup is as follows: Primary Archer C6 in router mode using PPPoE 2 SSIDs (5/2.4Ghz) DHCP Enabled IP set as 192.168.0.1...