Slow printing networked 64 bit win 7

Question

I have read many many posts about this.  HOWEVER, I print directly to the printers.  Http via Cups.
I can load my old XP machine as a VM on the windows 7 machine and it prints immediately!  What I have done so far;
1) Disabled items with netsh int tcp set global chimney=disabled (RSS autotuninglevel as well),
2) Bidirectional
3) Spooling (prints directly to the printer)
4) Firewall and anti virus
5) Print from VM of XP on this machine and prints in 2 seconds
6) Removed all printers and then Added them back again
7) Microsoft Fix it (even though I have no errors)
8) Clean Boot (Still prints slow)
9) SFC /SCANNOW Verification 100% complete, did not find any integrity violations.
10) Printers spool folder is empty
11) Hotfix, http://support.microsoft.com/default.aspx?id=2526028
12) Created 2 new user accounts, Copied to be sure no corruption
The system is slow whether it prints to a digital Ricoh, a Brother laser, an Epson laser or the okidata dot matrix printers.
Windows 7 professional 64 bit, 16gb ram, 3.4 mhz processor.
Not on a Domain.  Company runs windows pcs connected to linux server.  Cups printing.  No issues or problems on any other machines.  Most of them are XP virtual machines with immutable drives.
Would like to solve this before upgrading any other machines. (the staff will not stand this printing delay)

Answer 1

Hi,
After doing more research, I noticed that to print from cups printer, we need to connect it via internet browser.
In Windows 7, the Proxy settings will cause this issue.
Please uncheck the "Auto detect settings" under Internet option:
Similar issue, you can refer to this thread:
http://forums.fedoraforum.org/showthread.php?t=242451
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Kate Li
TechNet Community Support