Firefox recently released an update name Firefox 94, but there were some issues that were happening with various Apple products. In response, they rolled out Firefox 94.0.1 to help fix the issue with Mac OS X computers. It was reported that when viewing high definition videos, the player on Firefox would hang up and freeze. One older OS X machines were affected. There was a quick workaround by changing some settings in the config menu.
Key Takeaways:
- According to a report, the freeze happens on Mac OS X 10.12, but not on Mac OS X 10.13.
- A quick workaround to the problem involved a setting preference on about:config.
- Although the an problem affects only Mac OS X, the Firefox 94.0.1 update will be released for all operating systems.
“When the user loads a YouTube high-definition video (4k), selects the best video quality, and goes into full screen, he will notice that the video is not displayed and the browser freezes.”
More details: here