Bumping again, for closure this time. At least till I find even better solutions.

Motion judder for 24 images per second video is almost totally gone.

How?Why?
Because I can now use my monitor at 72Hz. Seems like nvidia drivers did manage to create a 1280*1024@72Hz custom resolution. I've never been able to before, the custome rez always failing the test sequences, or the new rez being in fact 75Hz...
I tried several times in a row and one of the trials was the right one.

Then I use one of the very last beta builds of mpc-hc with madvr renderer and latest reclock.
I get slight tearing from madvr, some flickering instead of judder on panning scenes. But it's fluid, with some exceptions I think I can say are from the encoding and/or reclock being too slow to adjust.

And yes, I get motion judder in 30 FPS video, like in CrossGame eps that often are encoded at 30FPS, the solution being to go back to 60Hz screen refresh.