VMware View ThinPrint performance benchmarks

I am using VMware View 4.6, Windows 7 desktop pools, natively installed HP and Xerox universal/global print drivers in my master template, networked IP-based HP and Xerox printers, and the Group Policy OEM installation of ThinPrint found at Group Policy Management Editor > Computer Configuration > Policies > Software Settings > AutoConnect Map Additional Printers for VMware View > Configure AutoConnect Map Additional Printers.

In Active Directory I have created a security group for every networked printer. We then add users our groups of users (e.g. DEPT-Finance) to the printer security groups. When a user logs into their VDI desktop, ThinPrint maps all of the printers the user or their department has been assigned to access.

My question is, "How long is this supposed to take? How quickly should ThinPrint be able to map 10 printers to a users desktop? What is the benchmark?"

In my testing, it takes ThinPrint about one minute to map one printer (the virtual CPU also nears 100 percent for each mapped printer). ThinPrint deletes all printers and begins remapping new printers when any of the following events occur:

1. User logs in for the first time
2. User restarts and logs in again
3. User logs off and logs in again
4. User logs in at a different thin client, moving the virtual desktop from one location to another
5. Administrator refreshes or rebuilds the desktop pool

The only time that ThinPrint does not remove all printers and remap them all is if the user Locks or Disconnects their desktop and then logs back it at the same workstation.

Many users will have 10 printers that need to be mapped to them. This means that when a user logs into their desktop, they may have to wait 10 minutes to print something to the printer they desire.

I'm implementing VDI at a hospital and many offsite practices. Doctors enter and exit patient rooms rapidly. VDI will be great for them since they can log into their desktop and it will quickly follow them from room to room. But they can't wait for their printers to remap each time.

I've tried using Group Policy Preferences with Targeting to map networked printers on print servers instead. But this option caused a five minute inital logon as Microsoft installed drivers and printers. Poor first impression of VDI. Performance was great thereafter, at least until an administrator refreshed or rebuilt the desktop pool, which would require Group Policy Preferences to remap printers.

At least ThinPrint allows them to immedately log into their desktop and begin using applications.

Is the performance I'm getting normal? Is there a way to configure ThinPrint to perform better? Can it only map new printers instead of removing all and remapping all? Any ideas or suggestions would be appreciated. Thank you.