I'm seeing weird bank on a Pixel 6a / chromium browser as well. I'm on mobile so I can't check the source, but this can't just be static HTML.

When I scroll the page, sections of text are missing then pop in, randomly though not as a scroll driven animation. It almost feels like something is blocking the browser's render loop and it can't catch up to actually paint the text. That'd be an insane bug on such a simple page, though I put nothing past react these days if they used it here.

I'm also having trouble with the page.

I wish web browsers had a "pause" button for scripts so I can just scroll to the bottom, let everything load and then hit pause and "freeze" the page contents so I can read without distractions.

I also feel like the quality of web UX is in rapid decline, and nobody wants to hire competent web developers who grok the fundamentals anymore.

Not so much stutter here but definitely some layout shifts as images/video elements load :/

It's actually quite usable and fast if you turn javascript off.

maybe the companies, who make them, have not enough know-how in web-development.

Which browser?

And which device.

Over the years, adding many simultaneous videos to websites has become quite common, and I have always marveled at how well many devices can handle this.

Nevertheless, it is pretty demanding for the hardware, and many smartphones are not made for such tasks.

Your comment makes no sense

I think that's the joke

Your comment uses php.

Took over 20s to settle on a Galaxy s21.