@David-TP My setup is 8 XE75 Pros V3, 1 X50-Outdoor, and 1 X50-PoE. Everything uses ethernet backhaul - the Outdoor is powerd by an outlet and has an ethernet connection from the PoE, which is wired via Cat6, and PoE, from the main (with a Ubiquiti PoE switch in the middle). 

The problem, I guess among many right now, is that everything is suddenly very unstable, on the mobile app all the devices suddenly only show as connected via wireless backhaul if they are connected at all, the web app only works about 30% of the time, and even then it's impossibly slow. By that I mean it will auto-logout before things like the Deco map even loads. And when the network is up and running, it just drops out randomly for anywhere from a minute or so to an hour at a time, then seems to reboot itself and works (mostly) again.

As an example, I got the web app to log in, and in the time it took me to type this out, neither the map nor the device list in the firmware page have loaded anything at all.

  @Solla-topee 
                                                                                                              XE75-Pro x 2
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1. Internet -> Main XE75-Pro -> Ubiquiti switch -> Satellite XE75-Pros

                                                                              \

                                                                                 X50-PoE -> X50-Outdoor

Every connection between Decos is wired. If the app was working properly the map would show that each device is connected via ethernet. Two XE75-Pro's are directly connected to other Decos, in the same way the two X50's are connected.

2. The nodes seem to drop out randomly, then reconnect to the network. In the app they show as connected via wifi, but in the ubiquiti app they are all showing as hardwired. I have not noticed a change in LED status during, but yesterday when I did another Deco system reboot, they would show as connected when red, then the LED would turn green, they'd stay connected for a moment, then it would turn red again, I'd lose wifi from that node. A second reboot seemed to stop that.

3. There were smaller problems over the past few weeks of individual devices losing wifi. I was on the beta that was just *prior* to the last stable release; it was working well and I didn't want to change anything.

4. Yes, all the XE75-Pro's are on 1.4.999 Build 20260319 Rel. 57838