Extremely slow printing for Kyocera FS-1320D on Вили Веревольф (15.10)

I have been experiencing slow printing issues with my Kyocera FS-1320D printer ever since I switched from Windows to Ubuntu. The printer is connected путь USB.

The problem usually arises when it ты ешь to медиум or large-sized PDF поля. It хан easily take between 5-10 minutes to start printing, and the украл lapse between one page and the next feels like forever. I often find myself forced to run в виртуальный XP machine, in which printing of the same exact file starts automatically. I installed the latest official драйверы supplied by Kyocera (PPD версия 8.4). Everything seems to be successfully configured in CUPS, эксперт small PDF поля or text-only documents хан be printed without noticeble delay.

I get the feeling it must be something related to post-processing the document одиннадцать it - been sent to print, эксперт it tends to happen when PDF поля contain images (e.g.: an export from PowerPoint). I would like to know if there is anything I could do to find the root of the problem, speed up the printing process and therefore avoid my dependance on Windows.