@Cinneide 

Hi

One, maybe stupid question - what have you set in fields Preferred DNS and Alternative DNS?

  @Cinneide

In the past, on older firmware my router had some kind of freezes, very often; it was when I didn't fill DNS addresses during network configuration. It helped a lot when I set both - Preferred DNS and Alternative DNS to google addresses. Preferred DNS I have set to 8.8.8.8 and Alternative DNS I have set to 8.8.4.4. From that moment I have less restarts and I observe no freezes.

  @Cinneide 

One more thing - if you are using backup functionality, DO NOT set "offline detection" to "double detection" - for me it caused a lot of freezes of whole router. TP-Link Senior Engineer advised me to keep "signal detection" with DNS searching address set to default value (in my case it was "a.root-servers.net")

  @OeKintaro update. I had to delete my network and restart the whole mesh system. That has solved my issue. Hopefully it won't happen again. I don't want to go through that again. 
 

  @Cinneide Hahaha I have learned the lesson from the past 1-2 years. Never rush to update as things always get worse.

  @OeKintaro @Cinneide

To be honest, I am positively surprised after updating the router on Sunday (3 days ago). From that time I didn't observe any restart. This is of course short piece of time, I will monitor it for next days. If I no restarts for next week, I will turn OFF scheduled daily restarts to check how stable it works.

I am really surprised, especially because @Cinneide has a lot of problems. Probably something specific of the setup / ISP which does not work well with this firmware.

Hi all

Ok, after one week of using this new firmware I am still very positively surprised. So far, no hangs / no random resets for past week. I will continue monitoring for one more week with current settings, if I observe no restarts, maybe then I will disable scheduled daily restarts or switch from daily to weekly to see if it still works.

What I also have observed, the main router doesn't loose topology of the network when switching from WAN to BACKUP. It is positive surprise for me as well. Unfortunately, it looses network topology when switching back, from BACKUP to WAN but it is very minor issue/feature for me. It causes for me that I have to set back connection preferences for few devices after each change 🙈 Would be great if these settings are not lost after every change of the network topology. But like I said, it is minor for me. Don't expect too much 😂

I am so happy that TP-Link probably has finally fixed these restarts after more than year 😊

I was too optimistic 😂

10 minutes ago I had first random restart since I upgraded main router 7 dsys ago. If once per week, sunday morning, it can be acceptable for me 😂 let see what further week will show.