FOSSDLE PieFedSaw this ghacks article for speeding up YouTube on FF and seems to help.
submitted by
Otterwww.ghacks.net/2025/11/24/these-two-tweaks-shou…
cross-posted from: https://lemmy.ml/post/39446054
I have seen folks talk about a pain point for using FF (or forks) being related to YouTube being super slow. The about:config settings the article mentions did seem to lead to YouTube loading faster on both my FF and Zen-Browser installs. So maybe this might help for others that specifically don't like to use FF as their main browser because of YouTube.
For those that just want the settings:
gfx.webrender.compositor.force-enabled (set to true and restart FF)
If on AMD GPU, this extra setting is supposed to help reduce CPU usage:
media.wmf.zero-copy-nv12-textures-force-enabled (set to true and restart FF)
*gfx.webrender.compositor.force-enabled* is not mentioned in the article at all - while they don't mention the specific setting annoyingly, they do mention 'layer compositor' so it should be *gfx.webrender.layer-compositor*.
They must have been editing the article back and forth. I also only saw "WebRender Layer Compositor", but it's organized nicely now
It does mention it, now at least.
I tried gfx.webrender.layer-compositor on linux and it actually made things a lot worse for me. Youtube took longer to load and sometimes didn't load correctly leading to the page having to be refreshed before it would respond.