> My complaint about the 48fps (after going in hyped to see this Spiffy New Format) was that everyone looked like they were speed-walking all the time,

I saw all the Hobbit movies in 24fps, and—especially (at least, this is where it first really stuck firmly I in my mind as wrong) in the underground scenes in the first, but also in parts of the other two—had a similar impression.

I think it had to do with some other element of cinematography particular to that film series, though it's quite plausible that 48fps exacerbated it.