So I understand that normally "Animation Speed" controls how fast PNGtuber Plus cycles through a sprite sheet. I've got a model that I'm working on that uses a sprite sheet for the open mouth, and I have animation speed set to "1", but the frames are going so rapidly that there's practically an after-image and seeing multiple frames at once. It sort of works right if I open the model in 1.3, but I have the problem in both 1.4.2 and 1.4.5.

Setting the sprite animation settings in 1.3 and then opening the model in 1.4.5 seems to have set the sprite to animate properly, so this might just be some kind of visual bug in the 1.4 releases.