Linux

10688 readers

438 users here now

A community for everything relating to the GNU/Linux operating system (except the memes!)

Also, check out:

Original icon base courtesy of lewing@isc.tamu.edu and The GIMP

founded 2 years ago

MODERATORS

Ategon@programming.dev

anzo@programming.dev

dwraf_of_ignorance@programming.dev

Low FPS in Firefox on one monitor (lemmy.world)

submitted 2 weeks ago by chaospatterns@lemmy.world to c/linux@programming.dev

11 comments fedilink hide all child comments

I switched to Kubuntu 25.10 on my desktop from Windows 10 and every since, I've noticed that Linux on my primary monitor has felt very choppy with a low FPS. Animations are choppy and slow. As soon as I drag it to my second monitor, everything is faster and has higher FPS. This doesn't happen on Windows. testufo.com shows ~20fps on the problematic monitor I also haven't noticed this behavior with any other programs. There are spikes to 50fps and smoother animations when I open the Firefox menu, but then it goes back to 20fps. Chromium on the same monitor is faster and shows 50+fps. Games on this monitor also are higher fps

The primary monitor is configured to 60Hz, the second monitor is 143.97Hz. I've got an Nvidia GeForce 2070 with the NVIDIA driver (open kernel) metapackage from nvidia-driver-580-open installed, 32GB of RAM, plenty of CPU, and no other programs or tabs open even.

What could cause this issue and how can I fix it?

you are viewing a single comment's thread
view the rest of the comments

[–] chaospatterns@lemmy.world 1 points 1 week ago

Just an update. Firefox 146 just dropped with:

Firefox now natively supports fractional scaled displays on Linux (Wayland), making rendering more effective.

After upgrading to 146 and natively using Wayland, it feels faster. Some fade animations are still choppier, but on average it's at least tolerable.

Thanks for the suggestions everyone.