Strange, it works here in Firefox on Linux using the internal GPU (I don't use primusrun for the browser). Normally I'm the first to notice a particularly heavy website or bad FPS in even pretty old games! Wonder how they managed to make it sluggish on a very expensive GPU but get my crappy setup to run it nicely

It's an OS thing. My Pixel 9 handled it just fine.

Windows by any chance?

Odd. My laptop seemed to do fine with a 'NVIDIA GeForce GTX 1650 Ti Mobile [Discrete]' using CachyOS. It could have been a little smoother but it rendered fine. There were a couple spots where it was a little herky-jerky-laggy that maybe needs optimization.

My MBP M5 couldn't handle it with Firefox but it was fine on Safari, betting it's a WebGL issue or something

My run of the mill notebook computer is showing the Jennifer Lawrence meme clip to you right now, and still performant.

Ran smooth on both my iPhone and my 13-year-old thinkpad x230.

Probably WebGL is using integrated iGPU for whatever reason. Happened to me on Windows+Brave.

ohhh... right, clearly, they only expected Mac users to open the web page or to apply.