so ive been looking at the pictures of the race waypoints and noticed a major issue... using a sphere is not optimal for timing.. consider this example .. 2 cars side by side...driving at the same speed, keeping level with each other... one car is in the middle of the track...the other car is running on the edge of the track... the sphere would trigger earlier for the car driving in the middle of the track as the edge of the sphere is closer to the car the 2nd car on the side of the track would take more time and distance to reach and trigger the waypoint IMO simple flat planes should be used...that way both cars will trigger the way points at the same time if they are level side by side...just like every other sim out there... heres an example taken from an rFactor track (and I could go back even further to Sports Car GT, or Grand Prix Legends) as you can see the way points are just flat planes... the big one in the middle is the start finish line (it goes across the whole track..AND pitlane).. you can also see the pitlane entry and exit waypoints...and split timing waypoint towards the top of the image
Don't worry, you can place both The checkpoints are spheres, the places where the time matters are boxes.