I first noticed this issue in some maps within ToN. Specifically, when crouching or lying down, the lower body would twitch violently—especially when lying down. The world where this issue is most noticeable is (wrld_c4069ce3-06db-4723-ac01-18437ab3f050).

At first, I suspected it was a problem with my model. However, regardless of whether I used public avatars or ones I uploaded myself, the issue consistently occurred. I'm sure my graphics driver is up to date, and this never happened before when I used to play ToN. I haven’t changed my computer hardware during this time, and other users don’t seem to have this issue.

I tried several methods, such as removing all unnecessary components from the model, including dynamic bones and constraints. Eventually, I discovered that if I had installed, the twitching no longer occurred when crouching or lying down (though it still happens while moving).