It's kind of depressing to see otherwise tech-capable folks go "Firefox is so bad, Youtube is absurdly slow all the time" and not for a moment consider that maybe the problem there isn't actually Firefox, but rather the video site famously owned by an anti-competitive monopolist that also owns the most popular browser and so has a *direct interest* in making it slow on Firefox.
Apparently Google's campaign of "only optimizing for Chrome" is working. Fucking hell.
@joepie91 they've been observed before to deliberately insert delays when Firefox is detected https://www.reddit.com/r/youtube/comments/17z8hsz/youtube_has_started_to_artificially_slow_down/
Personally don't even consider YouTube part of Google, they're just a media company under Alphabet, I never visit them anymore except maybe if someone sends me a link (and even then); I mainly just can't stand the ad spam, and just like any other website that's like that, I'll just leave. I have better things to do, whatever content was there is entirely optional to me.
"Firefox has performance problems though"
I'm sure it does, as all browsers do, but doesn't it seem a bit weird to you that it's always *Youtube* that people are complaining about, a site which barely has any complexity in it besides showing you a video?
@joepie91 Yes. And the problems started specifically when Youtube turned their anti-adblock-campaign to 11. Should be obvious enough,
Also Youtube has no reason to be slow. The video is handled by hardware acceleration, and everything else should be trivial enough to not even notice.