I have two wireless cameras, one on the front of my house and one on the back. Both of them behave as follows:
When app first connects, it's a low resolution image and the video works, with clock advancing, for a second or two. Then it freezes for a few seconds. Then it switches to a high resolution image, the video works with clock advancing for a second or two, then it freezes. After that it might go live intermittently for a second or two, then freeze again.
The software says that the firmware is up to date.
Exceedingly frustrating.