Windows 2016 Server RDP Printing not working

I've recently deployed my software applications, that run as RemoteApps, from my network which was running a Windows 2008 R2 Server over to my client's network running a Windows 2016 Server.  The printing via "redirected" printers is not working on the new W2016 Server.  When users attempt to print a report, the Print Dialog box shows ALL of their local printers (as redirected), but when they actually attempt to print to any of the redirected printers nothing prints.  As a work-around solution they are able to print to PDF files, stored on a shared network drive, then they are able to print the PDF files, like any other "printable" file, from their local desktops.  For a limited time they've allowed me to have control over Group Policy on the server, so I'm able to change GPO settings.  I've set all the GPO settings related to printer redirection thru RDS that I'm aware of and still nothing will print.  Has anyone had any similar experiences running RemoteApps under Windows 2016?  Any tips would really be appreciated.