Firefox Community Forum

My up to date FF screen starts shaking, primarily using Youtube for awhile and then going somewhere else. It will still start shaking using various websites. It takes a PC reboot to stop it. It does not happen using Chrome. I have done the following with no change: 1. Fresh install 2.Turned off hardware accel. 3. cache clear refresh 4. All extensions off 5. Started in Safe mode. This lasted the longest but it eventually started shaking.

Something to note: My screen size randomly increases/top tab bar disappears when typing something. It's random but it's new like the shaking.

YouTube only on Firefox has terrible stutter/frame pacing issues, most prevalent when watching 4k/60 content. "Stats for nerds" shows a healthy buffer and minimal dropped frames. This issue is not present when watching local videos or on Microsoft Edge. The issue can be alleviated by watching in 1080p60 but stutter/judder is still present. The issue is not resolved no matter what power or performance options I choose in my laptop's settings. Any help is super appreciated, as I really don't want to open Edge every time I need to use YouTube. Thanks!

Specs: Samsung Galaxybook4 Edge Snapdragon X Elite X1E-84-100 16GB RAM 60 / 120hz screen Firefox Hardware Acceleration on

Hi everyone,

Prior to the release of Firefox Desktop 133.0, which I believe came out today on 11/26, I was using the profile switcher that was in the Firefox application menu. I had all my profiles created in about:profiles and I had browser.profiles.enabled set to true. This allowed me to easily switch between profiles by pressing the hamburger button in the top right. However, it is no longer appears for me after the latest Firefox update. I'm not exactly sure if I'm missing something, or if this was intended as I know the profile switcher was a work in progress feature.

This reddit post shows what the feature looked like. I will also attach the images.

If anyone would know why this no longer appears to be working, or how to fix it I would greatly appreciate it. I know I can just use about:profiles or some other alternative, but I found this to be the most convenient.

It certainly appears they have, with the left and right padding growing wider. In fact, they both look about twice the size of the top and bottom padding, whereas before I remember them as being about equal. The change was immediately apparent with my home page!

Any particular reason for this?