Firefox experience on Linux is lackluster. No hardware acceleration, neither on opensource video drivers, nor on proprietary(Nvidia and AMD). On the same hardware on Win10 Firefox experience is definitely better.
The only wrinkle was when I tried to watch Netflix the first time I had to click a button to let me watch DRM'd Netflix streams.
https://wiki.archlinux.org/index.php/Hardware_video_accelera...
I have however found the lack of hardware accelerated video decoding to be a HUGE bummer, watching youtube absolutely destroys my laptops battery life. That is also a problem in Chrome though as far as I know.