Wifi disconnet in a mesh enviroment

[user_623715019411529_623715019411529]

So I have an asus mesh environment with extenders in mesh mode and for the most part all the cameras show 4 bars on the router. I've read and tested all the suggesting's from reolink support and I get the usual answers but why does the camera's not reconnect on their own when they get any optimal strength at all? As some poster have said they go off line and can't even be pinged? I'm an IT Professional experienced with a lot of access points, switches, and routers. Why do the go down and never reconnect? Adding to my question is just realized the camera's have CPU's and probably are maxing out because everyone is treating the disconnect as a wifi range issue and now wondering if the camera's are just simply crashing since they don't come back on their own. Could be like high resolution gopro cameras that just simply shut down when they get to hot?