New HP M602n Prints slow.

We have a New HP laserjet M602n that prints slow.  If you send it 10 document it has a 2 second pause between each document.  We ran an HP 4350 for 7 years with this same job and it did not pause.  If a document is 10 pages long it prints all pages at about 1 second per page then pause 2 second for the next document