You need to first hit one of the directional keys and immediately follow up with your spacebar. Just hitting the spacebar makes you leap in place. I keep my ring finger of my left hand on the #1, middle finger on #2, index finger on "W"and my thumb on the spacebar. I hit "W" and very quickly follow up with my thumb. My index finger goes back-and-forth between "W" and "S".
Good kitty!
