After adding more and more homekit devices to my home, I finally reached the point where my modem / router could not support charging. That seemed to be around point 48 of the device. I was at risk TG1682 and received an "incorrect password" every time I tried to connect a new device to the network. Or, if I added in a new homekit device, I would get the dreaded "unexpected error" when trying to add it. This, in addition to the "unanswered" frequency in the home application, on a variety of different devices.

After some research, I decided to upgrade my WiFi and decided to go the eero route and bought the 3 package for $ 199. Put my risk in bridge mode, I connected the first eero to the port on the arris and it was up and running in 10 minutes. Using the same WiFi network name and password on the eero I was able to automatically reconnect most of my homekit devices. Including a lot of Leviton switches that don't seem to have the network broadcasting 2.4 and 5 ghz on an SSID - contrary to what I read in this forum.

After that, I connected the other port of the eero gateway to a gigabit switch, and from that switch ran a cat6 to another eero at the other end of my house and raised a floor, because I was exhausted by my complaining daughter. WiFi issues. :-) So far, so good. I'm leaving the third eero offline because I think the coverage in the house is pretty good as it is now. If we add it at all, it could be in my basement, otherwise I'll probably end it.

It's been 10 days so far - knock on the wood - and I haven't had a single hint. Homekit was solid for a change, the WiFi access was excellent and I have full bandwidth available from my service provider, no matter where I am in my house.

FYI, my current home configuration includes 2 echobooks, 6 hue motion sensors, assorted hue bulbs and LED strips, 2 MyQ cameras, 28 Leviton switches, 4 iHome jacks, an aqua aquarium, a FibaroHome leak detector and Homebridge running on a Windows desktop provides 8 virtual switches for use in automation (largely to overcome security in some geolocation automations)