[jefurii]

FF runs fine on my six-year-old Thinkpad. Of course I run PrivacyBadger which blocks most adverts and trackers.

Are we really saying that Chrome is just more efficient at wasting CPU cycles to show adverts?

[guitarbill]

Maybe it's an OS thing. I'm on macOS, and FF feels much slower than Chrome or Safari (all using uBlock Origin). One big thing is HTML5 video playback, FF really drives the CPU up, even on a 15" 2017 MBP. Page loading is also worse, even on basic sites like HN.

[ralusek]

I have heard multiple people say that it is an OS thing specific to MacOS. Can't verify, have just seen that around HN a few times.