Yeah, I’d seen higher-frame rate video before, and since (though maybe not again in a movie theater?) but that’s the only time I’ve noticed that particular problem. I spent a little time searching around after I saw it, trying to figure out what happened, but the chatter over 48fps in general drowned out any signal about what might have caused that specific issue (though many others did report experiencing a similar sped-up effect, at the time—never found an explanation, though, aside from just blaming the high frame rate, but I suspect there’s more to it)