Parralex code injection buggy

Site URL: https://www.dentalartlimited.co.uk

Hello I have added Parallex code found on this website (https://stnsvn.com/blog/how-to-add-parallax-scrolling-squarespace-7-1) to make the image on the front page have the parallax effect however it is very glitchy and stuttery, does anybody know how to fix this ? Any help would be greatly appreciated. I have screenshotted the section that I am trying to make parallaxed.

Hi. Can you explain clearly??

I looked at that page and it seemed OK to me.

When you are seeing this issue are you in Preview? Try looking at the page using private browsing or incognito mode.

Let us know how it goes.

@creedon Hi there, hope you're well?
The above CSS code doesn't work for me on 7.1

I would like to apply Parallax to my homepage top section background video image. Is this possible and do you perhaps have a code?
 

Thanks you!

@IwanJ

I'm doing OK and I hope the same for you.

I'm not seeing any CSS above. If you are referring to the Javascript pointed to by the original poster, I don't have any experience with it.

SS v7.1 has a parallax, called tilt, for images but tilt is not available for video backgrounds.