Issue: The ROI packet containing PDF documents is being generated very slowly. No exception dialogs are displayed, and no errors are displayed in the Unity Management Console or the Diagnostics Console.
Resolution: When this occurs, consider upgrading your version of Adobe Reader. Some older versions of Adobe Reader can cause slower performance with ROI packet generation, in some cases causing the packet generation process to take much longer than it would otherwise.
Also check whether the ROI request contains large PCL documents. PCL documents containing a large number of pages (e.g., hundreds or thousands) may adversely affect the performance of request packet generation. If possible, break up large PCL documents into smaller documents with fewer pages.