You should also be able to

You should also be able to achieve a similar result by disabling dynamic contrast in the NVIDIA control panel. In fact, all three GPU vendors have a similar feature and will benefit by disabling the feature. Of course, if you are a fan of the feature, you can adjust the nominal range in WMC to help fix the flashing/strobing that occurs when the video is switching telecine modes (aka 29/59 switch).

To answer your question on Intel’s refresh rate precision. Both SNB and IVB platforms achieve something like 23.973 (23.976 is the target) which is about as good or better than NVIDIA cards I have tested with OOTB driver settings. I have read reports of Clarkdale also being addressed.