Problems with QueryPerformanceCounter on Windows Server 2003 Multi-Processor Hyper-V guests? Here’s why.

A friend of mine from another group came to me with a problem he’s been having on some Windows Server 2003 guests. They’re doing some nifty stuff with the .NET Stopwatch() class, and some WPF animations, which uses the QueryPerformanceCounter Win32 API to figure out the timing during the animations.  Apparently, when they run their…

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