So I found an ultra shortcut on this track

I found an ultra shortcut on this track https://mkpc.malahieude.net/circuit.php?id=195693. It's honestly hilarious. Check the tts to see it's use. Anyway, uh for how to do it, immediately turn and go into the offroad. Aim for the line between the blue square in the corner and the one next to it. Try to wiggle between those two. It's possible to get ridiculously fast laps with this. I got a 1.6 second time (3lap).

I know what that trick is, you could do that on even more tracks than just that one since it is basically any small square or rectangle in quick mode that you could do that shortcut on

You could do the same ultra shortcut on this track too: https://mkpc.malahieude.net/circuit.php?id=184354

I believe something similar.