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Animation acts differently on mobile

Hi Guys,
One of my animations on the homepage for this project acts differently on mobile than I’m expecting, and I can’t figure it out.
It’s the second scrolling marquee, halfway down the page, with image cards. The animation is simple, it just translates X and then resets. You can see it working correctly in the text-only version of it up above on the page. But on this one, with images, it stacks the cards on top of each other as it plays.

Thanks for taking a look!

Here is my public share link: