@Alexandre. Thanks for explaining this. However, as stated in my previous comment, I do not want to deal with this at a device level: I have Windows, MacOS and Linux computers, same variety for...

Same here on Deco M5 with firmware 1.5.1 . 5ghz capable devices (phone and laptop basically) in my home switch to 2.4ghz when further than 5m or behind wall. This band is really congested here and I...