Librewolf slower after upgrading to 25.05 from 24.11

Help
1
  • My config is at GitHub - xNyfPtx/nix-config
  • I use flakes
  • nixos-version outputs ‘25.05.20250525.7c43f08 (Warbler)’
  • When I first start Librewolf, the first few sites load fast. After the first few minutes, all sites load slower for some reason. I tested my internet and browser benchmark and it is indeed slower
  • Librewolf is the only one affected. Sometimes, the websites don’t even load at all or not load the CSS and fonts.
  • Kernel version 6.12.30, previous is 6.6.91 where Librewolf wasn’t slower.
  • Similar threads: Browsers unbearably slow after update
2

I have no fix but I’m currently experiencing similar issues with regular firefox too.

3

I can’t edit the post again for some reason but I nuked my system with 25.05 on it yet the issue still remains when I switched back to my config.

For some reason, the first generation has a different NixOS version. The rest are different. I think this has to do with my flake.lock. Interestingly, I didn’t experience any browser lag on the default web browser of Gnome but after the next few generations, the browsers started lagging.

image
image1110×321 40.5 KB

1 Like
4

Update, it seems the problem might have to with to do with wi-fi. Updating packages and building takes longer than usual due to the time it takes to download it. I have no fixes at the moment but I am trying to rewrite my config from a blank slate on a live usb to see what causes it.

5

Last update, it is now fixed for some reason. Wifi speeds are back to normal and so are loading pages. It eitther randomly happened or due to nix flake update