I recently switched to Firefox on Linux after 6-7 years of Chrome and I do use Windows and Mac laptop too.

1. On Linux - Firefox feels much more snappier than Chrome. Specically on Fedora, Chrome as a input lag which is non-existant in Firefox.

2. On Windows and Mac - Chrome is either on-par or feels snappier. I use either browser on these on two platforms.

3. On Android (galaxy-s8+), Firefox is fine but it integrates poorly with rest of the OS. Youtube links don't open in youtube app, searching for locations is bit of pain because Chrome produces Google maps hyperlinks.

I am still sticking to firefox though, because my main computer is Linux and Firefox is just to much better on Linux (lately).