Slow printing to network printers using CUPS

Hi Guys,

I've inherited a mess of an infrastructure in my new job, there hasn't been a sys admin in post for about a year, so things are falling apart. The first thing to break after I started was the printer server. I have it working again, and people can print, however it's very slow, slower than before.

I set up cups/samba from scratch so that windows users can simply access the server share, double click on the printer and then use that printer.

I did this using the cups-windows drivers and it works, however it's so slow with pdfs that it is unreal, ~3mins per page for some things.

My assumption is that it is the printer drivers, but that's just a guess since nothing on the printers have been changed. (They're Konika bizhub printers). In the last week I've been searching for a way to install the vendor drivers to the print server, but I haven't found a way yet.

Any help to diagnose what is happening or to install the drivers would be much appreciated.

Kind Regards,

Rudiga.