[Windows] WaitUntil timer inaccurate

[msiglreith]

Using WaitUntil on Windows may be very inaccurate due to the scheduler time resolution which is by default several ms, currently we just assume 1ms. For real-time applications this leads to laggy behavior when using it for frame timing, usually waking up only with few ms delay.

One option would be to use timeBeginPeriod/timeEndPeriod to dynamically decrease the timer to a better resolution and spin wait the rest of the time. Drawback here is that it may affect battery lifetime.