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by yoasif_ 2627 days ago
Have you set `layers.acceleration.force-enabled` to `true` in about:config?

It may help.

1 comments

Last I tried enabling that FF just started freezing randomly after, WebGL was still much slower than Chrome's and had artifacts, YouTube still didn't play 1080p smoothly. It just didn't work and reading the issue tracker they have no proper plans to fix all the acceleration issues under Linux either.
That is too bad. What distro are you on? What version of mesa are you using?
Kubuntu, latest mesa available from repositories. I'm monitoring the issues, will try again if some of them get resolved.
Good luck, for what it is worth, WebRender is being enabled on Linux. https://bugzilla.mozilla.org/show_bug.cgi?id=1543862