So I recently installed a KC420WS and haven't seen the level of performance which I think would be useful.  The big issue seems to be network performance - I regularly see "connection time out" messages in the Kasa app.

Before I get accused of having a junk router or something else that's silly, I believe I have made the best effort to provide the camera with a clean signal with the least crowded channel I can.  My hardware is Ubiquiti Unifi gear - I have multiple access points and I do filter queries using a PiHole. It automatically scans channels and adjusts the access points every 24 hours to find the least crowded band .  When I initially had issues, I installed an extra access point in my garage which prioritized 2.4g clients and this did improve from almost never being able to use the camera to being able to get video, albeit inconsistently. I have also validated that I am not blocking any traffic to/from the camera.

Currently the camera has a 256gb SD card in it - I was surprised that it filled up quickly.  I turned off person detection today to see if it will have any impact on performance.  Based on the irresponsive performance of the camera, I suspected that it might be trying to constantly perform I/O operations.  I have no way to validate this as the camera has nonexistent troubleshooting metrics.  This is not a problem with my KC110 doorbell which performs excellent with a full SD card, but it does not see near the same level of activity.

I did lightly mask the camera with some plastidip so it wouldn't visually stick out.  I really don't think that's the issue.

Hoping this is resolvable, but not holding my breath.  I have had good luck with other Kasa products, but this one hasn't lived up to those expectations.