@Kevin_Z 

Hello,

I went through your guide, and it lists "blue" interface. There is nothing remotely similar to the "red" interface that is on my router. None of the settings allow for selection of width. I can't even see anywhere where I can configure the 5ghz settings, only the 2ghz band if I disable smart connect.

I am using an Archer AX11000 router. Is there an updated guide/tutorial for this router?

@barrow 

My interface definitely looks different,  however I was experimenting today.

I follow a similar process:

1. Log in to the local admin interface using the IP of the router
2. Using the "hamburger menu", go to Advanced->Wireless->Wireless Settings.
3. Turn *off* Smart Connect.
4. Adjust settings for channel, channel width etc. Then Save.
5. Reconnect, go back in and you can turn "Smart Connect" back on, it will keep the channel and width settings with the current HW and FW.

I did this to pick the DFS channels that their firmware wouldn't do on the auto settings, despite DFS being turned on and channels being completely unused - it insisted on using the non-DFS "popular" channels and having significant interference. 

Once I did this, my two 5G channels were in different parts of the channel allocation and (for the moment) are completely alone there. I couldn't use 160 because on the lower end, it overlapped with neighbors and on the upper end, it was not allowed, likely too close to the airport.

From the other end of the apartment with my Samsung S20 Ultra phone, I got 416Mbps consistently on what maxes out on Ethernet as 920Mbps connection. (The first test for some reason got 769Mbps.) I discovered that if I held the phone on my lap, I got 370Mbps and if I held it above the monitors, I would get 529Mbps, that's how easily WiFi is affected.