It took about an hour to print a 16 page document. Printing has always been slow on graphics, very likely because of the slow link to the printer and large graphics files; but has become amazingly slow for all documents lately. The file that took an hour is a 150,941 byte PDF coming out of Firefox.

System is Fedora Fedora-25 with all updates, running on a 4 Processor True Intel System.  

User interface is KDE Frameworks 5.29.0

Cups is cups-2.2.0-5.fc25.x86_64 .