We have an XenApp 6.5 Farm with Thinclients in use. Every time the user reconnects from another Thinclient, the new printer creation takes up to 5-10 Minutes until all printers are connected to the continued session. We couldn't find any suspicious Eventlog entries. All permissions are right.
We are using Ricoh Printers with Universal Printer Drivers (3.9.0) for x64 (only x64 clients).