Very few people have played this version or know what it is.
It doesn't seem like Gremlin ever released it, except to people who sent their disks to them by post.
If the framerate is lower than 1 player mode, or lower than Lotus 1/2, then you haven't got it! If you're not sure, try playing 1 then 2 player for comparison.
It definitely needs to be tracked down. Full-speed Lotus 3 is fantastic!
Chris