That and I believe it has a top speed of about 40 mph, so you cannot run the bike flat out or the drone will have to play catch-up.
that is very true, especially when you are asking it to rotate around the subject. It would have to be going 100+ mph in order to rotate around a target traveling 50mph 100ft away

When I was tracking our car in Iceland we had to go pretty slow, I will just ramp the speed in post
It is best for tracking walking/jogging/hiking