Mozilla just released a HUGE update to FireFox recently, they call it "FireFox Quantam", it is essentially supposed to be a lightweight faster version of Google Chrome.
I personally definitely see that it's faster, but on Windows 7 at least, it uses more Memory than Chrome does. (https://prnt.sc/hbzbx0)
I can DEFINITELY tell that FireFox Quantam was made more for Windows 10 though, since: https://prntscr.com/hbzcna (It reminds me of Edge)
I just recently switched back to Windows 7 and sadly things seem to already be optimized for Windows 10... I may have to switch back soon.
I'd definitely recommend this new version of Firefox who has Windows 10, or just an easier time running it in general.
Firefox Starter Kit: https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/