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Comment by lucideer | Hacker News Reader

Doesn't work for me.

If I leave it a while, I eventually get a notification pop-down saying "This page is slowing down Firefox. To speed up your browser, stop this page."

Is it Chrome only?

Whatever it is, it sounds like someone's implemented a very simple feature very badly - a bouncing logo is the type of thing people made in basic "DHTML" on the old web, not something that should be slowing down a browser in 2022...

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I'm running Safari and it's working. Not Chrome only.

Worked on Firefox for me -- maybe you need an update, or maybe you have an extension that is fighting it?

No weird extensions and same in safe mode. I suspect it's hw accel issues of some kind.

Wouldn't've expected as it's just a PNG (they're dynamically generating a PNG data uri and inserting it into an IMG SRC), but I don't know how they're generating it (hidden canvas?) and the update frequency is high. Doesn't seem very optimised.

It is probably down to ensuring hardware acceleration is turned on as I am certain that I have done that for a different web issue.

All it's doing is setting the logo to absolute and adjusting its position values each step. Outside of CSS redraws, it shouldn't be causing any slowdowns.

That and updating the SRC on every iteration with a generated base64 PNG data URI.

I saw that but I figured it was just generating on "wall" collisions.

Tried it in Chrome. It works but oh my is the frame rate awful.

Works fine for me in FF

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