@David-TP Hi David,

I completely wiped the deco's config and reinstalled and for now it seems stable. The only issue I still have is that the parental controls don't work anymore:

I allow someone to use internet for 3 hours per day, and everyday I have to reset this manually. Somehow the counters think there has already been 3 hours of activity while the device was shut down (completely no power so wasn't sleeping either). When I click the insights button and show history, is only shos some history from the day before. This seems to still be a bug ...

  @TP-Link 

I have the same issues as stated above, my WiFi connection is very unstable and loses connection during the day even though before the update to 1.6.0. I never had any issues like these. All my appliances use WiFi, so I can't say anything about a wired connection.

The instability causes my iPhone and Android tablet not to load pages or chats properly (no images), the same goes for my laptop. Also, using my laptop, MS Teams videocalling has freezed images and sometimes lose audio, or it disconnects my remote desktop even though the VPN I need for that is still active.

What's even more weird, is that only once I had issues like this while using streaming apps on my Samsung TV (after turning off the beamforming the streaming resumed but the issues on my phone, tablet and laptop weren't resolved).

My internet provider doesn't have any issues and all the speed tests (tested on the Deco App) have a great result.

I use the Deco M5's in access point mode, the setup is like this:

Internet (main floor) -> Modem (main floor) -> Main Deco (main floor) -> wired assistent deco (2nd floor) & wireless assistent deco (1st floor)

However, since turning off Smart DHCP it seems to be working better, although I haven't had the time to fully experience this.

  @TP-Link It was one unit that the Deco app and when you logged into the main unit via web browser would show as disconnected from the rest of the deco m5's. Didn't matter if it had was Ethernet backhaul or \Wireless backhaul.  So if you tried to reboot all your M5's at once it wouldn't be rebooted because the app doesn't see it as online. Hard rebooting it didn't do anything for it either  

I did find a solution, however, though I am monitoring it to see how long it will work.   What I did was find the IP address of the one out M5, and logged into it via a web browser hook up to Ethernet back haul.   I used the Deco M5 app on my iPad and rebooted all the Deco M5's at once and rebooted the one that wouldn't connect to the others at the same time via the login from the web browser. Thus they were all rebooting within a few seconds of each other.   When they all came back online they could all see each other.  It's been that way for about 24hrs now.  I will continue to monitor it.  The Garage Deco M5 was the one losing contact with the rest of the units.  The office and Family room are Ethernet back haul and the garage, Rec room, Rec room Alarm are all wireless back haul.

  @Blmontne I had a similar problem, I now have removed my main deco and did a complete reinstall / reconfiguration and now everything seems to be working perfectly. Maybe there is an issue in upgrading and a fresh / clean install solves it ?

  @TP-Link Since I upgraded to 1.6.0 I have one unit that may have gone bad, I think, unless someone has a suggestion.  It keeps connecting and disconnecting from other units in my network, but always has a green light indicating internet connectivity even if not connected to backhaul via ethernet cable(i.e. completely wirelessly) Says it is disconnected from other Decos, and it is in that state more than a connected state. I have removed it, reset it, and added it to the network again, pushed the 1.6.0 firmware again, and tested it has a separate network router, which appears to work. But as an AP on the network, it does not communicate with the rest of the units, for very long.  Even when I reset it and added it again, it finds the unit quick enough, but I have to keep hitting the retry to add it to the network, it eventually will add it and shows it connected to other units, but then shortly after that goes to the disconnected state.    Any Ideas, or do I have a unit that has just gone bad?  It a version 1.0

  @TP-Link Did the upgrade to 1.6.0 about a week ago. Since then a lot of issues: sudden drops in connectivity. I wish TP-link hadn't released this as a stable build :( I use this professionaly and it't really a big issue not to be able to do decent teams / webex calls ... I wish there was a way to downgrade.

  @TP-Link 

After updating M5 firmware to 1.6.0, main Deco  looses LAN connection every day once, which didn't happen with earlier firmware 1.5.3. Would be nice to get updates without loosing stability.

My main router has following event logs related to this (?).