Mozilla Firefox 84 was released today with a dramatic performance boost after adding native support on Mac devices with Apple Silicon processors. Windows, Mac, Linux desktop users can upgrade to Firefox 84 by going to Options -> Help -> About Firefox. Firefox launches over 2.5 times faster and web apps are now twice as responsive (per the SpeedoMeter 2.0 test),” Mozilla says. Mozilla also fixed several memory safety bugs impacting previous versions that could have allowed attackers to execute arbitrary code on systems running vulnerable Firefox versions.”
Source: https://www.bleepingcomputer.com/news/software/firefox-84-dramatically-boosts-performance-on-apple-silicon-macs/