Dolly Cam Question

Hey there, I'm using a Dolly Cam to track a vehicle around circuit (using auto dolly). Ideally, I'd like the camera to progress around the track slower than the vehicle does, so within auto dolly I've set the position offset to -0.25 (ideally I'd like the car to turn the corner and once it's exitted the corner, the camera would be entering the corner, so the camera turning lags behind the car turning).

The main issue I'm having is that the camera movement on the corners is very rapid (I assume as the relative dolly track section is longer than the track, the camera accelerates to maintain a constant distance).

So a couple of questions:
1. Is there any functionality to cap the speed of the camera on a dolly track?
2. Would I be better to move the camera through script instead of auto dolly - and if so do you have any example scripts of this?

Thanks for any assistnace