Ubuntu 20.04 pre-installed firefox lagging on scroll in fullscreen mode

Question

When I go on any website (google.com, youtube.com or duckduckgo...) when the window is in fullscreen mode and I want to scroll, firefox starts lagging really hard. When I make the window just a little bit smaller, everything is running fluently. I really don't know if that is a bug or anything known. I already searched for solutions but found nothing.

I don't have this problem with other browsers or applications.

Any ideas?

Solution 1

I have also found that disabling smooth scrolling in preferences solves the issue, even when fractional scaling is enabled.

Solution 2

This error only occurs when fractional scaling is enabled. If you disable it everything works fine.

Solution 3

check in its preferences that « hardware video acceleration » is enabled, and in about:config set « layers.acceleration.force-enabled » to true

sources :

https://discourse.ubuntubudgie.org/t/firefox-scroll-lag-on-ubuntu-budgie-19-04/1783/2

Comments

[ChanganAuto]

Not really applicable here considering all the previous answers.