Hi all. I'm experiencing a frustrating video playback issue in Firefox on my Mac. Whenever I move my cursor, the video becomes noticeably blurry until I stop moving it. Then it takes a second and returns to normal sharpness. This problem is exclusive to Firefox and doesn't happen in other browsers. One interesting quirk is that it seems like the lower the video resolution is, the more noticeable the blur appears. This video on Reddit shows my issue perfectly: https://www.reddit.com/r/mac/comments/qbecrh/m1_has_problem_when_playing_video_and_moving/ I've already tried several common fixes, including disabling hardware acceleration and other graphics settings such as tinkering with gfx.webrender, but nothing has resolved it. I'm hoping someone on the forums might know if this is a known bug or if there's a solution I haven't found yet. Specs: MacBook Pro w/ M1 Max (2021) macOS Sonoma 14.1.2 Firefox 143.0 (aarch64) ... but the issue has been going on for years so I doubt that the macOS or Firefox version has anything to do with it. I'm at a total loss here and would be immensely grateful for any help.