No sweat. Incidentally, Chrome can do PiP in Web View, too. I was doing that earlier today and forgot to mention that in my previous post.
The one thing that makes me keep that in the running is your earlier description of losing the signal whenever you tried actuating the camera’s motor, because that should increase the power draw at that time. I still think you’re on the right track concentrating on the Wi-Fi signal issue, but if you get that figured out and still have issues, then I’d consider looking at power and maybe even try an outdoor adapter (though your description of the way you have things protected seems pretty good already).
I think that’s totally a reasonable thing to test that way, especially if you have good weather and already have that thing on hand. 
At least you’re honest! 