[andy-wu]

I tried Firefox on OS X but it maxes my CPU frequently, doing simple tasks like scrolling or loading small gifs on Reddit, slowing my system down significantly. I noticed my fans spinning much more frequently than Chrome. It appears to be linked to using scaled resolutions [0]. Until this is fixed, Chrome is significantly faster for me, which is disappointing because I like everything else about FF.

[0] https://bugzilla.mozilla.org/show_bug.cgi?format=default&id=...

[cdubzzz]

I use Nightly on OS X for web development work every day and don’t see anything like this. Including using multiple screens with scaling (although I almost never work on the battery).

The one annoying issue that I do get is occasionally Dev Tools will stop working for a window and I have to close and open the Tools windows. Outside that, no complaints on OS X.

[robin_reala]

Tbf I get that issue with dev tools issue with Chrome as well.

[dawnerd]

Same experience here. Typing performance was pretty poor.