QUOTE(bononoz @ Sep 23 2021, 12:03 AM)
do not buy a deco. cannot change wifi channel if your area congested (stuck on auto select, google it)
as others said already, 2 storey house: get the Asus 86u
speaking from experience
I will try to explain why we don't give the Deco administrator the permission to manually choose a channel on the current Deco system, which may not precise but I will try my best:
Firstly, we need to clarify that the wireless channels on the current Deco firmware are not manually configurable as Deco automatically selects a 2.4GHz channel to use based on what it sees around it, selecting the channel that has the least interference. The 5GHz channel appears to be configured based on the region the device was manufactured for use in and they are apparently not auto-selected and are definitely not manually configurable.
Secondly, we need to reiterate what is the point of having a whole mesh Wi-Fi system in your network. The whole point of mesh networks is to give a seamless, unfettered, and performant experience for wireless networking, and thus a mesh network is "self-configuring" and "self-healing", the network automatically incorporates a new node into the existing structure without needing any adjustments manually by a network administrator and it automatically finds the fastest and most reliable paths to send data. If you change the wireless channel on the Deco nodes manually, it may give you the risk of losing the other Deco nodes and thus ruin your Deco system, you may need to start over again to reconfigure them.
What's more, it is not always easy to choose a clear wireless channel in your networks, you may need to test with all of them in order to find one that may be usable. Most importantly, crowded isn’t the same as busy, even though some channel scanning apps tell you one specific channel is busy, they don’t always measure other sources of congestion and interference. Non-Wi-Fi signals (like those from microwaves, Bluetooth devices, cordless phones, garage door openers, baby monitors, etc.) can all congest a channel but may not show up in a scan. So it’s possible that a channel can appear empty, while it is, in fact, saturated with other kinds of interference.
PS: copy paste anwer for Deco