I have 7 of the KC420WS cameras and they are constantly offline, even though my router shows they are connected with high spped.  Average db rating is -34 which is excellent. I also have around 50 switches, plugs, and lights.  All of those devices respond instantly from the app. The cameras don't. I have tried upgrading router and modem and I am on a 1 gig fiber line. Speeds typically run 890 to 930. I have no other problems with the internet. I have tested placing the camera line of site with no obstructions about 18 feet from the router, still the same issue. Device offline for a few seconds, then shows video, then offline. Each app update keeps making it worse. I have tried another phone, same issue.