Cache QueryPerformanceFrequency() result #12056
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https://learn.microsoft.com/en-us/windows/win32/api/profileapi/nf-profileapi-queryperformancefrequency
The result of QueryPerformanceFrequency will never change, according to this Win32 API documentation. The non-windows result of QueryPerformanceFrequency is known at compile time. I think it can be left out of the ProfileStats struct and cached elsewhere.