@Alexandre. OK. I will give each of your points a go and see if the results improve.

I have the Deco X20 3-pack and have been struggling with very slow wifi speeds. My original ISP router in one location was often faster. The Deco X20's are in AP mode using both 2.4GHz and 5GHz. I...

@NPN Thank you. I guess its kind of obvious. Not sure why I missed it. Well after more testing with these things this afternoon, I think they are being returned to the store anyway. I was getting...

@NPN OK. I see those same screens but still do not see any options to choose 2.4GHz or 5GHz unless you can provide more screenshots please.

@NPN I am in AP mode, so those buttons are not available to me in the Android APP

@NPN How did you disable the 2.4GHz within the App? I do not see an option to do this, but then I am also using AP mode and I am using X20, but with firmware 1.05 and latest android app.