In Starcraft 2 Marines can stutter step, meaning they attack move and start their attack animation, this is canceled by a move command and then attack move again.
Theoretically there should be a sweet spot. With the optimal frequency the marine does the same damage as a standing marine, but moves the farthest possible.
Here is my question: What is this frequency? How often should I stutter step per minute and how long is the input delay between A + left click .... left click .... A + left click.
If I wait too long between A + left click and left click the animation is canceled too slow and my marine does not move that far. If I wait too long between left click and A + left click my marine does not shoot ASAP.
As a bonus I would like to know what APM I would need to perform this optimal stutter step.