xerox d95 printing slow pdf files

Hello everyone. I also bought a xerox d95 for my company. I immediately realized that something did not work the right way. PDF files are printed strangely, text PDFs are printed as fast as PDFs that are scans are printed slowly. I tried the same file on a KONICA MINOLTA but the problem does not exist. MINOLTA Super Speed Print and Xerox Super Turtle.
Do you have a solution? Xerox should be the world leader, something that can only do bad advertising.