I also noticed that there is some lag when eating food. The hunger bar will fill and empty very quickly and eventually fill after a few tries of this animation. The mobs still lag when bobbing in water. The drops from blocks float midair before coming to the ground, and the day cycle reverses occasionally, making the day longer and potentially affecting the day/night cycle.
I have also noticed this on my Nintendo Switch. It makes mobs move oddly and drops lag. It causes significant lag when trying to eat. My food bar takes several animations to fill a space. It also seems to mess up the day/night cycle by setting the sun back every few seconds. Mine doesn’t lag when my map is in my inventory or toolbar but if I actively have it out, especially in the off-hand it definitely does.
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