Printer Duplicates (~50) and continually rising on PD9 running Win8.1

I'm running latest Parallels Desktop 9.0.24229 and have my default guest OS machine running Win8.1. This machine was created on PD9 and has full integration with OSX.

Now Parallels Tools supports printer sharing between OSX and guest OS. But the problem is, that it reinstalls the printers quite often, resulting in 50 times the same printer (for every printer installed on OSX, so actually 300 printers installed) currently. I once deactivated the whole PD-guestOS-integration, deinstalled Parallels Tools in the guest OS, rebooted and deleted every single printer from Windows successfully. Then reintegrated the guest OS with Parallels Tools, but still after some weeks the same behavior comes up again.

As I am currently debugging a print issue with a single printer in windows this immense list of printers really is a big hurdle.

Does anybody know any solution to prevent these printer duplicates?

Kind regards,
Next Thursday