CPU: AMD Ryzen 7 5700X

As for my memory, I don’t know the speed and I doubt that speed is the problem here because when I use Ungoogled Chromium, the javascript pop-up opens smoothly.

I can’t find that option in my login screen’s gear icon menu. I think that the reason why I can’t use Wayland is because I have a Radeon HD5450 graphics card that is 15 years old.

I changed it via Debian’s Settings app.

I’m using X11 and Gnome.

I have Flatpak Firefox and it’s giving me the same issue as Firefox ESR.

I’m using Firefox ESR because Flatpak Firefox started freezing after a couple of updates and ESR is super stable.

As for my desktop: Gnome - X11

Once you have Flatpak setup you can run sudo flatpak install firefox

I already have Flatpak installed and it has the same problem as Firefox ESR (which comes with Debian by default, if my memory serves me correctly)

Also, is there a reason you are using Debian? If that’s what you want then that is fine but it isn’t something people use for the new packages.

I have used Debian-based distros in the past like Mint and Ubuntu so I wanted to use Debian itself out of curiosity.

Lowered my monitor’s refresh rate to 60 Hz and it didn’t resolve the issue

I opened Firefox 134.0.2 (64-bit) that I installed via Flatpak—got the same slow pop-up issues.

Thanks but I want to stick with the ESR version. It’s nice n’ stable.

This is apparently the latest version of Firefox ESR that’s available in Debian’s repository.

I used these commands to update Debian:

sudo apt update -y && sudo apt upgrade -y && sudo apt autoremove

Here’s the output:

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Making those changes didn’t resolve the problem

Can you run a benchmark, maybe this one

Can you see something strange in about:processes?

I can’t find anything suspicious but here’s a snippet of it:

Can you try it in other browsers?

I used Ungoogled Chromium and it opens the pop-ups smoothly (so Firefox is causing the problem):

Clip

I disabled recommended performance settings and hardware acceleration in Firefox and I’m still experiencing this issue:

Interesting, I have never tried this before.

I’ll try out your solution and get back to you.

Thanks

For me sites like YouTube, Rumble, Odysee, and Bitchute work but unfortunately this version of flatpak Firefox is giving me problems.

It uses Google’s Chromium engine, that’s the problem.

I appreciate your recommendation but I’m boycotting Google and as much of its tech as possible—that’s why I was using Firefox.