I know that they get paid (x1.5 or x2) when they go to court + overtime.
Good attitude might help, and they may let you off once they feel they have issued enough tickets & are feeling charitable. I suppose if they are already booked for x hrs overtime they aren’t really eager for more overtime, but if someone is a dick they may just do it for kicks.
Its the luck of the draw. I’ve been lucky twice & once got nailed for barely 60 in a rd which is a 60 zone mostly, except a patch during school hr.