Double Stick (prev INSTANT SPINPUT TECH) | Paper Mario TTYD HD

change your controls as described in the video and you can perform all overworld actions instantly and save SO much more time in a speedrun
hold one direction on the right stick, tap the opposite direction on the left. the left stick will take priority over the right, resulting in a frame one change in direction and, for some reason, a full spinput
update: this tech is currently used in speedruns to get DPG in Poshley without Mowz