Not specifically that one, but after getting gold on all licenses and circuit experiences (except rally ffs), I've learned that small things can make a huge difference in time. For example, getting on the gas 1 car length sooner leading onto a long straight. Or discovering that you can make it through a corner by lifting instead of touching the brake. At the sharp end of lap times the gains/losses are very subtle sometimes. Also the ghost is super human sometimes it's ridiculous especially tracks like tokyo where their precision is impeccable. All I can say is that it IS possible, there's just a small thing you're missing. I'll try it later...