[brokenmachine]

That is not my experience. I use FF exclusively, I can't remember the last time I used Chrome.

I have over 1200 tabs open at the moment, including at least 100 youtube tabs, and mine runs fine even with a bunch of other stuff running.

I do find that if I go over 150 windows open then things start to become problematic, but I think that's because my GPU is only 8Gb.

CPU is usually at about 10% on an i7-12900k.