Extremely poor performance on Firefox Android
Closed this issue · 3 comments
Landing page renders at like 10fps in Firefox on Android, which is pretty funny while reading performance claims.
Issue occurs in Firefox, but not in Chromium.
I verified two devices and two different Firefox versions, one of them is the latest nightly, one is an old stable.
I think this is because of the CSS, there are a lot of "fancy" stuff going on there, perhaps it is blurs or transitions or shadows slowing things down, but that is just a guess.
Specifically those pages are very slow:
- https://astro.build/
- https://astro.build/about
- https://astro.build/themes
- https://astro.build/showcase
- https://astro.build/blog/astro-021-preview
Those are okayish, but still laggy:
Those are ok:
Landing page on a desktop Firefox too feels sluggish while scrolling, although it is pretty subtle and isn't as obvious.
I can also confirm this. We previously narrowed this down to some mix-blend-mode issues I believe and experimented with some alternative approaches here: #602
Not sure we were ever able to find a good solution.
Very poor scroll performance still present on Firefox 121 desktop on Linux. See screencast linked from #997.
@delucis this issue should be reopened - mobile firefox scroll performance is still very bad
to be honest - this is a red flag to me when deciding between astro and alternatives.