Mozilla has released a new version of Firefox that promises improved browsing performance on 120Hz displays and higher refresh rates.
Launched last October, Apple’s redesigned MacBook Pro models with M1 Pro and M1 Max chips feature Liquid Retina XDR displays with ProMotion technology for adaptive refresh rates ranging from 24Hz to 120Hz. When viewing a static web page that does not require a high refresh rate, the MacBook Pro display adopts a lower refresh rate to preserve battery life, but when gaming, scrolling, or other activities where a higher refresh rate will result in smoother content.
According to Mozilla’s release notes, the latest Firefox 103 update offers improved display performance capable of delivering refresh rates above 120Hz , suggesting 14- and 16-inch Macs with ProMotion will benefit. As some readers will recall, soon after Apple launched the 14-inch and 16-inch MacBook Pro models with Apple Silicon last October, many users began reporting jerky issues while browsing Apple’s Safari.
While some users have reported noticing Safari smoother scrolling and performance on these Macs after updating to macOS Monterey 12.2 , Apple has never officially confirmed that ProMotion is working in its native Mac browser. Therefore, anyone who isn’t. still convinced to see optimal refresh rates in Safari now has at least one alternative option to use a browser that should be able to run ProMotion at full capacity.
Firefox 103 also offers improved responsiveness on macOS during periods of high CPU load, which it achieves by switching to a modern blocking API, according to the release notes. Also new in this update is the ability to change the font size of subtitles directly from a Picture-in-Picture window, as well as support for subtitles on platforms including Funimation, Dailymotion, Tubi, Hotstar, and SonyLIV .
- Firefox 103 Includes Performance Boost for Macs With 120Hz + Displays (MacRumors)