Originally, the E30 GrA at Silverstone was doable. But after one of the updates the times became over 4 secs slower. Something in the early build changed and brought the speed/times down to realistic levels.
AFAIK doing Silverstone below a 2:16 even in a GrA car is beyond most skills/machinery. I believe breaking 2:20 in a current supercar is considered 'alien' IRL. (Perhaps someone could correct me if I wrong).
Perhaps the Lotus/Int event is the same way.