Cameras connected to Wifi routers are problematic for surveillance cameras because they are always streaming and passing data. And the data demands go up with motion and then you lose signal. A lost packet and it has to resend. It can bring the whole network down if trying to send cameras through a wifi router. At the very least it can slow down your system. And then any distance will slow the speed even more.
Unlike Netflix and other streaming services that buffer a movie, these cameras do not buffer up part of the video, so drop outs are frequent. You would be amazed how much streaming services buffer - don't believe me, start watching something and unplug your router and watch how much longer you can watch NetFlix before it freezes - mine goes 45 seconds. Now do the same with a wifi camera and it is fairly instantaneous (within the latency of the stream itself)...
The same issue applies even with the hard-wired cameras trying to send all this non-buffer video stream through a router. Most consumer grade wifi routers are not designed to pass the constant video stream data of cameras, and since they do not buffer, you get these issues. The consumer routers are just not designed for this kind of traffic, even a GB speed router.
You either hard-wire them or ubiquity nano-station them.
Unless you spend big bucks for a truly dedicated solar system where the components are the size of half a vehicle, the consumer grade solar cameras where the battery fits in your hand will not cut it. They cannot stream high quality video all thru the night. They are motion sensing based, and the sensors are crap so all you would get from it is what time it happened, but not be able to identify anyone.
There is a person in this picture, do you see him?
I will give you a hint - he is carrying a highly reflective license plate. He is almost completely invisible due to the sensor size and algorithms of the consumer grade camera to prioritize a static image over motion video. You can kinda make out the outline of a head, but this would be useless to the police other than what time someone came by...