Hotfix 2675785 corrects the problem that data transfer speed is slower than expected under a network latency is between 1~8ms. The installation guide and download link are shown below. This hotfix could only apply to Windows 7 and Windows Server 2008 R2 operating systems.

• Download link http://support.microsoft.com/kb/2675785/en-US
  ( This page is provided by Microsoft )
• Installation guide After entering the website (as shown in the figure below), click "Hotfix Download Available" link.

After submit your E-mail address and personal information, Microsoft will send you a download link and the installation instruction to your E-mail address. Follow the instructions to continue installation.