Ok thanks for the answers, I think this trick is linked to the slow physics in water without gravity.
Runners use the Great Tree Chamber SW to take the artifact from out of bounds, the Great Tree Hall bomb jumps to clear the magnetic rail are insane
Quote from StefanvanDijke:
also doesn't a 21% run require the spinner trick without space jump?
Runners use the Great Tree Chamber SW to take the artifact from out of bounds, the Great Tree Hall bomb jumps to clear the magnetic rail are insane