Arlo Pro 2 does not detect all the motion

[SBHO]

I have Arlo Pro 2 cameras and have turned on Motion detection. Motion sensor sensitivity is set to 100%. Even with this setting my camera does not record all the motion. I usually see after a person or an animal has walked 5 to 8 ft of distance. I may see sometimes the feet or sometimes tail. Not sure what is causing that. 

It does not detect a person or animal right after it's in the view of the camera.

[jguerdat]

Make sure you're setting sensitivity in your modes/rules and saving. Assuming you're doing that, post screenshots of your cameras with descriptions for suggestions.