[rvba]

I actually was looking recently at memory (and processor) usage of my browsers.

I often have multiple tabs open since I revisit some sites.

Biggest culprits of memory bloat seem to be discord, linkedin and a specialist page that shows some maps.

Gmail (!) feels incredibly bloated now as well - it has random jumps in processor usage, especially when loading.

At the same time: firefox simply is uncompatibile with youtube - random freezes and lags. There are multiple therds about it on the intetnet. Some say that youtube is intentionally slowing down firefox.

I think nobody at firefox uses own browser so they dont know youtube runs bad with an ad blocker. Also probable reason is that they try to kill firefox by conforming to some web standard (just like conforming to .webm - when you save pictures from reddit they arent saved as .png, but as the crappy .webm - I guess someone at mozilla is working very hard to lose the last few users they have. And yes I am aware you can solve this with an addon. An addon that is not checked for viruses / spyware)

[scriptkiddy]

My experience with FireFox and YouTube has very much not been this. YouTube works perfectly for me on FireFox. I would check your config/addons and see if there is some setting that is causing errors on YouTube.