Printing from Firefox is really slow--2-3 minutes before the print menu appears, and then another minute before the printer actually goes to work. "Printing" to a .pdf file takes just a long before the file appears on the desktop. The problem is uniform across all the websites I've tried it on. I don't have the problem with Safari or Chrome. Restarting Firefox with add-ons disabled makes no difference. Deleting the printer setting didn't help. Resetting all Firefox printer settings didn't help. Refreshing Firefox helped once, but only for the first print job after the refresh, then the problem reappeared. This issue started fairly recently, maybe when Firefox v.84 appeared (?) I'm using Firefox 84.0.2 and macOS Sierra 10.12.6 on a late 2012 iMac. This problem does not show up in the family's MacBook Pros, which have the same version of Firefox, but newer OS versions. I'm resistant to updating the OS, because too many of the apps I use regularly don't play nicely with the newer versions of macOS. Help! Thanks, Wimsey