Printing on Virtual Printserver with bad Performance

Question

Hi all,
I have a virtual Print server running with Server 2012 on a Hyper-V host. I'm facing performance issues when clients try to print on a shared printer. I have another physical print server confirgured exactly the same and using the same drivers for other
printers (but same models). From the same client I can print on the phyisical server and I'm not having any problem while printing on the virtual one causes me a delay. They are in the same Gigabit network.
Services on Physical Server: Print Server, DFS Replication & Nameserver, TrendMicro AV, Windows FW
Services on virtual server: Print Server, Azure AD Sync / DirSync client, Trendmicro AV, Windows FW
The problem: When printing from notepad (but even from other applications) there is a window appearing "now printing" while the print job is being sent to the printer. When printing via the virtual server this window stays 8.5s
and freezes the application. I have measured the time in different scenarios. The test has been done from the same client:
Printing Client-> Virtual Server
All services active: 8.5s
Inactive AV: 8.5s
Inactive FW: 4s
Printing directly on Virtual Server
All services on: 1s
Printing Client -> Phyisical Server
All services on: 1s
File and print services are allowed to pass the FW. I've tried various measurements:
Inactivate IPv6 (registry key)
Inactivate chimney offload
inactivate RSS
inactivate Auto Tuning
Any ideas?
Thanks a lot!
Regards,
Jan

Answer 1

In windows 2012 there is a really good feature for remote sites Branch office printing. You can eanble that so machines prints directly to pritner instead of going through server.
http://technet.microsoft.com/en-us/library/jj134156.aspx