Just to contribute: yet another instance of "cool slideshow" on my (most definitely low end) laptop with integrated graphics.

Then tried it on my aging Mate 20 Pro (not too new, not tooo old), and it just seemed to get stuck at "Downloading runtime". Got a funny feeling my flaky 4G wasn't actually to blame, inspected the tab from my laptop (chrome://inspect) via USB, and was greeted with

  Uncaught (in promise) Error: Needs OES_texture_float_linear to function
      at M (worker-3ec07b2e.js:1:3338)
      at J (worker-3ec07b2e.js:1:3403)

It is what it is. It's a good philosophical question about whether it's worth coding up an error screen, since it's all just to tell people they can't play with the toy. Hehe.