Maybe my explanation or attempt at a fix is not correct, but there is a very clear visual difference when the mod is enabled vs disabled, for example when looking at the leg animation when flying. (video)
MC-178267 is an unrelated issue. The issue here is that the player model can't be updated any faster than 20 times a second.
Maybe my explanation or attempt at a fix is not correct, but there is a very clear visual difference when the mod is enabled vs disabled, for example when looking at the leg animation when flying. (video)