Lots of issues with Doorbell camera

I picked up the Doorbell camera recently. I'm able to connect it to my WiFi network without issue but am having constant problems with it dropping connections, only recording partial video and the audio working sporadically.

When I am able to run the Connection Check it reports that the Signal Strength is "fair" (-60 dBM) and the Upload Speed is "good" (9.22 mbps). But more than half the time when I try to connect to the camera I get an error saying the camera is offline or has disconnected from the Internet. I get notifications saying motion detected, but when I view the video sometimes I'll get a few seconds of video and then a message saying the connection was lost.

Sometimes I'm able to use the audio from the app to the doorbell, other times it doesn't work. Audio from the doorbell back to the app has only worked 2 or 3 times out of the 50 or so times I've tried it.

I've tried lowering the picture quality to 480p.
I have a WiFi extender near the front door. I've tried putting the extender right on the other side of the door so the signal was as strong as possible but still had the same issues.
I've tried removing the extender and moving the router right on the other side of the door but still had the same issues.
I've tried creating a completely new 2.4 GHz WiFi network and only connected the base station and the doorbell to it but had the same issues.
I've tried turning off every other wireless device in the house aside from my phone, the base station and the doorbell. Still had the same issues.

I don't see how this can be a network issues at this point, I've given the doorbell the best possible environment to work in and it still fails.

Does anybody use this device and have any degree of success? Could I have just gotten a bad one or are they all like this?