[fragileone]

HW acceleration on Linux was fixed about a year ago https://9to5linux.com/firefox-81-enters-beta-gpu-acceleratio...

[jvzr]

It appears to work for Netflix, but not YouTube videos. Are there restrictions in the implementation?

Edit: following this¹ (without installing any driver though) was enough to make it work for YouTube, apparently. Thanks for the info!

[1] https://askubuntu.com/a/1291873