Could someone edit this movie's (and
1234M's) categories to include "Contains speed/entertainment tradeoffs?"
Doors have a 2 frame rule, and since this run aims for in-game time, biospark uses the frame rule to his advantage. He postpones exiting a cutscene by a frame whenever the frame rule doesn't line up with when Samus reaches the door's loading zone.
However, pauses also do not count towards in-game time, so they could also be used to shift from even to odd in any room. While pauses are used throughout the run to manipulate the RNG, they are not used in various other places where it would save one in-game frame (the second room, for instance).
This was not used in biospark's first 100% tas of this game, nor dragonfangs' 0% tases, so there were no intentional tradeoffs in those runs
Imho this is also another good reason not to aim for in-game time in the future, even though I'd love to see an 0:54