Problem is i have like only 30 tabs youtube now ^^ and ram is at 80% suspend tab to save memory is active , 8 threats is set by default. I Tried all basic troubleshooting steps but nothing worked! I mean youtube might not work with Firefox well if i had 100+ youtube tabs but even with very little tabs it gets slow AF!

You are useless like in 2016 there was no problem even in firefox... I donated money to you , even couple youtube tabs i have i5 9600kf , 3200mhz 16gb ram - not even maxed ,it is lagged as hell... It is firefox we already tested it before even Quantum it runs like shit. Well it is always fault of management not devs... LAgged garbage enjoy nuclear war ediots... I am genius but i would have to do everything myself, software devs call me brilliant after i give them like lines most basic core features and logically how things should ... Living in idiocracy nothing can work right once, no one can do 1 thing right, too many stupid ppl in the world all 140IQ+ already gave up.................................