Dear John,
Sorry for the misunderstanding.
But the Plugin's default scroll feature will animate the element, when the screen is scrolled to that area.
And not to apply the animation when scrolling starts.
So in your case, as soon as the element is on the screen, the animation will be applied, which in your case, is instantly
You would require some addition script, like in the example:
codepen.io/nickcil/pen/sfutl in order to achieve this.
I'll ask the Dev team to look into it, but it will take until Monday to post a response.
I will update you as soon as I have something.