Video Issue

I have the Ring app on my phone and computer. When it has detected a person I can't view the video right away but when it detects motion such as a car driving by I can view it right away. It happens in realtime. It is interesting the camera doesn't pick up the movement of the person at the street or driveway until the person has either left and walking away or the person has gone inside the house. By the time the camera detects the person they have either left or no longer there. So, when I go to replay the video it is too late to see in "realtime" who was at my door. I understand there is some variables at play here. It could be a setting or a Wifi issue. The purpose of having a video doorbell is to see who is coming to my door or pulling up in front of my house. I want to visually see the person getting out of the car and walking up to my front door and I want to see the person leave. Also, if the person is talking as well. I don't want to just hear the sounds.