Doorbell 2 Height vs Detection distance

Hi all. I have previously posted on here about late detection of people when approaching my door. I've tried everything possible to get the best outcome, but video playback shows them pretty much at the door when the doorbell detects them. After looking at the article describing the perfect installation height of 48" [https://support.ring.com/hc/en-us/articles/115002548086-Proper-Positioning-for-your-Ring-Video-Doorbell](https://support.ring.com/hc/en-us/articles/115002548086-Proper-Positioning-for-your-Ring-Video-Doorbell) the picture shows a man and his dog (in blue), with the dog in the high motion sensitivity zone. The next picture it shows is of the doorbell being too high and therefore the chance of picking up the heat/motion of the car, **but with the high motion sensitivity zone NOW being in the ideal place for my particular setup**. The path to my house is around 30 feet from the front door, and then a driveway which is another 25ft to the road. My question would be, for my particular setup would I be better off installing it 6-8" higher so that the motion sensitivity zone is further away from my front door?So that way it would detect people quicker? Also I'd use People only mode so it doesn't detect cars. I think the diagrams are misleading, as in some peoples approaches to their house are not short like suggested. Let me know what you think. Regards, Rob.