I recently decided to add an eero Beacon to my home wi-fi setup. Not surprisingly, it took all about 5 minutes to get it working. I continue to be very impressed with eero and, like they advertise, my wi-fi has never been faster. I put the new Beacon in the garage to give better coverage out there and in my yard, and the built-in nightlight is a nice bonus.
eero Tech Support once told me that it takes about 24 hours for your network to settle in and adjust when a basestation is added or substantially moved. I can't explain why adding this Beacon made such a difference, but I'm seeing the highest speeds ever. Here's a screenshot of my speediest (via the eero app) showing that my AT&T Fiber connection is really paying off too.