YouTube - Improve Firefox video play

[ambaca]

One YT channel, @BrenTech, gave some firefox configure to speed video play in youtube.

• I guess it is to stop play videos as AV1 by default, or something.

Anyway, those who experience few-seconds-loading-bug ⌚ on YT videos randomly at the beginning, try these settings if it helps.
I have now using 5minutes and seems it works well, for now.

YouTube video -> SnjnAI8qn8A
How to IMPROVE YouTube Performance in Firefox! (About:Config Tweaks)

If you have AMD GPU, use also middle configure.

gfx.webrender.layer-compositor = true

media.wmf.zero-copy-nv12-textures-force-enabled = true (for AMD GPU only)

media.av1.enabled = false