I prefer live scenes with pose rounds lasting 10-20 minutes, or at least what we call sessioned scenes, which is live for 1-2 hours one night, and then live for another 1-2 hours another night.
During the day, I’m okay with Distracted, where pose rounds last 15-60 minutes, but it can lead to me feeling bad if I take too long or my RP partner takes too long (I didn’t say it made sense).
A solid chunk of my RP is async, even though I don’t much like the style, simply because that’s what best fits into the available time. Most of my availability is after 8pm Pacific, when most non-Pacific folks (and many Pacific folks) are in bed or headed to bed. But if an async scene goes more than 24 hours between poses, or takes more than a week overall… I tend to lose the thread pretty hard.