I wonder whether cloth self-collision works. I created a cloth with two materials and folded them like the first picture. I started cloth simulation, whose self-collision distance is 0.75. The cloth became strange like it in the second picture.I tried different self-collision distance, but it didn't work well.... Let me show four sets of experiments. I need cloth self-collision in my clothed avatar. Cloth self-collision doesn't work well as I think. Penetration or repel happens on pocket, collar or hip where shirt and pants (they are one mesh object) overlay.
Experiment 1: Large cloth dropped to a cube with 0.75 distance on Self-Collision. The result looks good, but the beginning is not.
Experiment 2: Large cloth dropped to a cube with 0.55 distance on Self-Collision. The result looks bad, but the beginning is good.
Experiment 3: Smalecloth dropped to a cube with 0.75 distance on Self-Collision. The result looks good, but the beginning is bad.
Experiment 4: Small cloth dropped to a cube with 0.55 distance on Self-Collision. The result looks bad, but the beginning is good.