Took me 3 hours to install the Zen Wi-Fi... turns out it was a defective unit.

I bought these units because I thought it would be more cost effective than the more expensive WIFI 6 units however, if you are thinking about making the move to WIFI 6 it may be cheaper because you will need less units.

I do agree with a commenter that stated these new units were troublesome when they were first released back in Nov 2019.

Is it a defective unit, not sure?

It appears that a few months back, Google released a firmware that made previously well-performing Nest Wifi units start performing not so great (signal mysteriously dropping to 12-15Mbps)

Two units solved my problem and the signal is VERY strong everywhere, upstairs and downstairs

These units dont like Managed switches.