@TP-Link I think that the source selection its a functionality that should be not so hard to implement and brings a very different user experience.  Because in my case the difference when my 3rd deco connect to the 1st(main deco) and to the 2nd is huge.  When its connected to the 1st the signal is week because is far away and I experience cuts in Netflix content and its almost impossible to reach 4K Resolution.  When I manage to connect to the 2nd deco in the first 5 seconds Netflix reach 4K resolution and stays that way without problem.

The conclusion to this is that getting this functionality would put Tplink deco in a must buy situation in the mesh technology devices without a question.

@Seba83  Agreed on your points. After a lot of messing about with rebooting the devices I managed to get them to connect how I would prefer (in a daisy chain) and my speed has gone from 20mbs to 100mbs. I know this will be short lived as for some reason Deco decides that the weakest signal from the main Deco is better. Which I know for a fact it isn't.

Even if daisy changing cuts the throughput for each time it hops / links across a node, I'd rather have it like that as the throughput of the device is enough for my incoming connection speed. My biggest gripe, and the the reason I am looking for new units from a different brand, is that I have not been given the option to choose.

@jl10101 agreed. 

I recently gave up and just set the Deco that's in the center as main, and now everything falls in line automatically. Most people can't do this though, so hopefully the feature will be implemented soon.

Even in my situation the speed dropped a bit (due to this, I had to move my LTE modem to a sub-optimal spot), but since I'm getting a 250M fiber a week from now that will connect to the center Deco, I guess I'll survive. 

Also people, you gotta realize that the M4 is the cheapest Deco of the whole line, so from a priority standpoint you'd imagine it to get new features last of the bunch... Unfortunately. But hopefully the firmware is similar enough to the others that it'll come out someday soon anyway.

@McFox 

I did that too, but unfortunately now my devices, just only  choose de main deco,  and they shouldn't, since i have shellys choosing the main deco, when the 3º deco is at 3 meters. I really just want the option, where we could choose the deco to connect. I'm a developer and for my experience, this can't be so hard to implement.

Main deco: 20 devices.

2º deco: 3 devices
3º deco: 3 devices

4º deco: 0 devices

@FlabbyPanda I have 3 X20 v2s and an X20 v1.  I have a v2 as the master and the other v2s connected via Ethernet. The v1 is farther from the master than any of the v2s and it automatically daisy chained with one of the satellite v2s not the master

@TP-Link 

the option to choose the signal source is in the ASUS ZenWiFi AX Hybrid XP4 .... TP-Link, please do this with the Deco P9 software, thank you

@jl10101 I have been waiting and watching the threads on this subject since November 2020, and I'm truly dumbfounded by the  lack of activity from the side of Tp-link. I don't understand why they don't seem to care at all by customer satisfaction. My guess is that they will not fix it. My next mesh is NOT tp-link