@David-TP Thanks for your reply. Here is my network topology. As you can see I'm a loyal Tp-Link customer :). Everything is connected through the ethernet backhaul. I am not leveraging the second...

My home network has five TP-Link Deco: three of them are M5 while the other two are M4. The M4 are V2. FIrmware version is the latest for any Deco. All of them are connected through ethernet cable....