Scroll Snap CSS in Chrome not smooth.

Site URL: https://tomato-porpoise-bb3a.squarespace.com/config/design/custom-css

Wondering if anyone could possibly help.

I am trying to add a snap scrolling feature to my site where it snaps in vertical sections.

Seems to work so far but when viewed on Chrome it is snapping super fast - is there a way to improve the CSS code to make it a smoother transition?? 

Any help at all would be super welcome.