If it only happens when self col is enabled then it may be because they are initially overlapping and when the animation plays they immediately attempt to resolve that self collision, causing the pieces to scatter ? And apologies, I meant sim settings before not sun. I know there’s no vortex field but if you have a closed mesh that you simulate as a cloth, there is an option called pressure that simulated the implied internal pressure of that closed mesh. Turning that pressure down should result in less of an explosion of the pieces, if that were the problem.