@David-TP Got a notification from the app (new firmware available). But the app (latest version) said the latest firmware was already installed (1.7.3). Refreshing didn't help. Manually (WebUI)...

@haytona agree! The cheaper M5 has better support and newer features then the more expensive M9 Plus ?! @TP-Link, with modular developed software, it would not be hard to keep the M5 and M9 in sync...

On the 2,4GHz band the optimization works fine, when the used channel is too busy, the Deco switches to another channel. On the 5GHz band nothing seems to happen. The used channel has 3 other users...

Updated 7 days ago. Version seems more stable. I use the M5's in router config, with previous version I had problems with internet connection (Wifi connection without internet access) a few times...