For the developers, as per the title please consider adding manual channel selection capabilities to the Deco products - the automatic channel selection of the current device lineup is abhorrent as it relates to the 2.4GHz radio.

1,6 and 11 should be the ONLY channels in the 2.4GHz spectrum available to use; all other channels are subject to adjacent channel interference - if a manual selection option is not possible then please at least considering restricting the selection to the 3 non-overlapping channels.

As a wireless network engineer, seeing the app claim that "Channel 5 is perfect" hurts me right in my soul. 

This is not a difficult issue to resolve, please at least put some thought toward applying best practices for the 2.4GHz band that have been the standard for at least the past 10 years.