I have 4 amcrest camera's I would describe them as less that reliable,
Picture freezing is a regular occurrence, they will unfreeze eventually, but often I just unplug and plug back in my self.
They often seem to act up when there is a lot of movement in the picture.
They are pretty much good enough to see somebody pull into my driveway or walk up to the front door.
I don't use cloud recording, I use netcam studio, and android boxes with onvif camera monitor on screens around the house.
I feel it's a get what you pay for situation, most ip cams are double the cost of the amcrest ones
Sony 75" X940D, 7.1 Klipsch, Onkyo TX-NR656, Xbox One/360, Nvidia Shield Alienware Alpha, Arris Gateway, 42" Samsung