>>2723661That's because MMM physics aren't calculated exactly like MMD, and even renders within MMD aren't going to be identical every time. Even if you lock the physics on frame 0, there's going to be some rng involved.
Ideally, you bake the physics first then you edit the keyframes you're not happy with.
There's no point doing all of that if the physics are somewhat consistent on your model or if you're not making some gimmick video with reflections or something but it's a very useful tool if like me you're autistic about clipping.
What I do is I bake the hair, skirt, sleeves, things like that can clip, I edit them afterward to remove all clipping, then I turn the keyframe physics off like pic related, that way I don't have to bake every physic bone because I can keep the physics enabled in my scene, only the bones I want baked are.
The Specialist is fucking hard on physics too but it's short enough that I'd rather bake it once then tweak the clipping manually through all of its 4000 frames, at least for stuff like the long dress, and then leave the breasts and such to the MMD physic engine. It's the kind of motion that you could render 10 times and never get something good if you leave everything to MMD.
