So are you using fps management just for scaling purposes or also as a way of ensuring fairness? The reason I ask is because games like Forza have had to resort to setting all online players' frame rates to be the same regardless of their machine's capabilities due to the way the in-game physics work. PC players on high end hardware would consistently get better lap times than Xbox users because of it.

Maybe this is a bit out of scope of what the goal is for this project but just thought I would bring it up.