Snapping and Scrolling the page (interaction)

I try to make a full screen one page photo portfolio. First section starts with 1. title that fades in from left blurs out and vanishes. Second section with title visible but bluring/vanishing after seconds. All sections with a button that starts a slideshow. To have each section covering the window snapping is cool.
Problem: Second section with snapping and scroll-effect (wether in «Scroll scene» nor interaction with trigger «scroll page») doesn’t work.