Floodlight Camera

We've had the ring floodlight cam for quite some time. Wireless connection is strong as I installed a router a few feet away. The picture quality is excellent. We've even used the audio to have a neighbour close our garage door. The problem is only about half the events are caught. How does it capture us going for a dog walk one day and then not the next. Similarly with cars going in and out of the garage? If I was to rate the device it would only get a 2.5 out of 5. Any help appreciated.