@TP-Link_Deco and what is the function of "the network optimization" feature in the Deco M5 app?  Isn't it to decongest the wifi channel and change the channel?

@PASCAL348 That function is new for the Deco X60/X20 devices (the X60 just had a firmware update), too.  I tried it while looking at a WiFi spectrum analyzer, and I did NOT see that it made any changes.

So I just yesterday evening sent a request to TP-Link asking for what it is supposed to do.  I can't tell that it is doing anything.

@TP-Link_Deco Hi, i think we seriously need to have manual channel selection for to different usage scenarios. For my case, like many other users, i have a device that has compatibility issue with certain 2 4GHz channel. Prior to using Deco, i can easily select a compatible channel and have no issue. Now with Deco "intelligently" switching channels, that device would get disconnected if an incompatible channel is selected. I had to reboot the Deco multiple times, while using WiFi analyzer, to make sure that it switches to the right channel.

Another issue i noticed is that on 5GHz, it always default to channel 40. This is strange as my neighbor is also using channel 40. Using WiFi analyzer i can see that in certain area my 5GHz WiFi signal is almost as strong as my neighbor's. I thought Deco would be smart enough to select another channel but no. This causes unstable 5Ghz connection. My smart TV will get disconnected frequently when connected to 5GHz. I tried rebooting hundreds of times but 5Ghz always stays at channel 40.