It is possible to do that shortcut without the setup and saves ~2-3 seconds but I cannot get that consistency

This is how the setup works:

1. Go backward ~1-2 seconds (also so left a little bit)

2. Accelerate and rotate to the right

3. Jump

4. Congrats! You made it (hopefully) !!!!!!

Watch this video for more details (also it's my old pb 1:05.640)