In what way is it less performant? The start up is faster on Firefox on both PCs that I use. When there are a ton of tabs, both browsers eat on all RAM, but I wouldn't say that Firefox drags the system down anymore than Chrome.
I'm on Mac OS. It bogs down all the time. I have very little in the way of add-ons. Don't know why I've been downvoted, because this is just my experience. I've been and remain a user since Firefox 2.
