ok i tried recording it but lag makes it impossible so ill just explain it
On level 12, most runs start as soon as the player touches the ground because starting later makes it impossible to reach the elevator in time. However, I've discovered that by spamming the jump button really fast (there's also timing involved but it gets consistent), the player can triple jump and gain a bit more height than a "perfect" double jump. This not only makes the jump to the ledge from the second platform more consistent, but it also saves time because the player doesn't get stuck on the ledge for a bit. With this, I can also start moving a couple frames later to reach the elevator with less time elapsed.