Since updating my mod to 1.4.5, motion and rotation is very choppy, studdering to the correct angle and position. Has anyone else noticed this? Vanilla entities don't seem to be affected, although the code doesn't appear to have changed (from a quick looks through).
I've had a similar problem, but that was with Bukkit. I haven't done much recently with only the client, but I might be able to try looking into it later.
Thanks.