Can anyone explain why this home page, the scroll reveal gets slowly worse as worse as you scroll.

https://www.zedmed.com.au/

Things at the bottom are easily on the screen but do not show until you scroll a bit further. While ones at the top work perfect/better. Here are the classes I set up:

  ScrollReveal().reveal(".content-scroll-delay1", {
    delay: 200,
    duration: 750,
    distance: "30px",
    reset: false,
  });
  ScrollReveal().reveal(".content-scroll-left", {
    delay: 500,
    duration: 750,
    distance: "30px",
    reset: false,
    origin: "left",
  });
  ScrollReveal().reveal(".content-scroll-right", {
    delay: 500,
    duration: 750,
    distance: "30px",
    reset: false,
    origin: "right",
  });
  ScrollReveal().reveal(".content-scroll-fade-up", {
    delay: 0,
    duration: 2000,
    scale: 0.7,
    reset: false,
  });
  ScrollReveal().reveal(".content-scroll-home-content", {
    delay: 700,
    duration: 3000,
    scale: 0,
    reset: false,
  });

Seems like a simply implementation but I can't figure this out.

Here is ScrollReveal starting defaults:

var ScrollReveal = (function () {
  "use strict";
  var r = {
    delay: 0,
    distance: "0",
    duration: 600,
    easing: "cubic-bezier(0.5, 0, 0, 1)",
    interval: 0,
    opacity: 0,
    origin: "bottom",
    rotate: { x: 0, y: 0, z: 0 },
    scale: 1,
    cleanup: !1,
    container: document.documentElement,
    desktop: !0,
    mobile: !0,
    reset: !1,
    useDelay: "always",
    viewFactor: 0,
    viewOffset: { top: 0, right: 0, bottom: 0, left: 0 },
    afterReset: function () {},
    afterReveal: function () {},
    beforeReset: function () {},
    beforeReveal: function () {},
  };
......

THanks