Microsoft has released an update to increase the Windows 7’s Video Performance.
KB2028560 – Video Performance Update for Windows 7 – This update is a separate package of changes that must be installed in addition to Windows 7 or Windows Server 2008 R2. It additionally provides new functionality and performance improvements for the graphics platform. You should also install this update to support features in an upcoming release of an Internet Explorer 9 platform preview build. (Available in 32 & 64-bit)Download –> Video Performance Update for Windows 7Download –> Video Performance Update for Windows 7 64-Bit