Not counting the added features, font and emoji changes since those are all subjective.
Since it was made available to me (T-Mobile S22 128GB) I’ve WAY less frame drops and the animations themselves seem smoother.
I haven’t had it long enough to notice a difference in battery performance but it’s something I plan to pay close attention to considering the terrible battery life the base S22 has had previously.
Better performance on the S22+ Exynos here! I don’t like the other aspects of OneUI 6 though so that’s a bummer, but it is still nice that my phone feels lightly smoother