200 tabs split in 12 windows, each window seem to carry a big overhead. Btw, I said "2 to 5 GB of free RAM", so that means I have more than 4 GB total... pay a bit more attention before being pedantic.
I read your comments just fine but you weren't making sense but now you explained it. 200 tabs in 12 windows? Yeah, nobody cares your browser is crashing now. You can switch to Chrome and maybe it won't crash as much but it will use more memory.
Personally, I would reevaluate how you use browser.
