[dmantis]

First, old firefox (pre-quantum) really started to be slow and non-competitive.

Second, Google actually were caught on making their resources work worse on firefox and other competitors with some hacks.

E.g. https://www.zdnet.com/article/former-mozilla-exec-google-has...

Assuming that literally everyone use gmail, youtube, etc - it had looked that mozilla doesn't work reliably for end users.

[moooo99]

I switched for that exact reason - Firefox was starting to become really slow. After a few years of exclusively using Chrome, Firefox (thanks to Quantum) became my default browser again. It still sometime feels slower than Chrome, especially on Google sites (YouTube and GMail are incredibly slow). But that could just be my current pc starting to show its age.

[recursive]

I've heard this a lot. I use youtube fairly regularly with firefox, and have never noticed any performance problem.

[TurningCanadian]

Chrome was also much more secure and didn't lock up as much thanks to process isolation.