I started running this game recently and saw this trick in the top runs, but I can't figure out how to do it consistently. What do I need to fo to be able to get it right?

subpixels.

What xcvazer said. However I did find by moving in a certain consistent way in the screen that I got the jump more often then not. It's really stupid though and there's no shame in leaving that strat out unless you're gunning for WR.