Time loop stories are always looping on a human-scale level of time, like one day. That’s a suspiciously perfect amount of time to figure out you’re looping and do something about it. I would go so far as to suggest that loop durations like a single day are an anthropocentric capitulation to the parameters of human storytelling. Time doesn’t care about our needs. There should be a more time loop stories where the loop is, say, just a couple femtoseconds long. It would suck to be in one of those, but it’s more realistic.