Slow print preview (multiple browsers)

The print preview is taking about 2 minutes to generate in Firefox, and for the last 15 seconds the entire Firefox window becomes unresponsive. I am only "printing" to a PDF to save, and I have no printers connected to my (modern) laptop.

When I tried on Chrome for comparison, it takes about 30 seconds (still a ridiculous amount of time) but without the freezing behavior.

I tried setting print.prefer_system_dialog to false (which does not generate a preview that I can see), but Firefox still takes just as long to pop up the system dialog and the window still freezes.

I only really care about fixing the problem with Firefox. Any suggestions are welcome, thanks!

Info:

• Mozilla Firefox 121.0
• Google Chrome 120.0.6099.129
• 11th gen Intel laptop on Arch Linux