My test series, more to come, is never about frame rate, it is all about smoothness. As in later tests, there would be a noticeable difference when the texture is "lighten". Flying Beirut can get over 70 or 80 frame per second, but ghosting and studdering still persist.
I think before all those "magical" technologies come into play, there would be a need to see how to minimise the problem, when plagued, at least to me, from the very start flying in VR.