At work so can't check but this potential option just popped in my head, could be a could way to save FPS if you can shorten the viewing distance of a track.
or maybe if not the whole track, just its external objects... I think of Monaco and its buildings who make my FPS drop every time
I'd imagine you could do the same as we did in rF1 in order to save fps. When rF1 came out I had a slow pc so I had to spend ages learning how I could save fps in order to make it drivable. Trouble with rF2 now I can't do half of the things I'd like to because it'll stop me being able to run online.