I have four older Foscams and two brand new Amcrest IP2M-84B cams. I have jogged all the setting around and this is the best picture I can get. They are both acting like this.

I started with defaults then tuned my saturation down a little. The green, red, and white pixels vibrate. It looks the same as when you take a 320X240 video and display it at 640X480. This camera in the driveway is probably 30 feet from the router.
Here is a picture from my Foscam that is 150 feet from the router.

I brought the camera in and set it up in the same room as the router.
Here is a video clip at defaults except 1080P.
https://youtu.be/wy7vWmWah4s
*R