Snap-fit contact snagging problem

My time period (1s) is now fully invested in a shorter run so it is advancing more slowly.


Note that the first elements to fail is a bad shaped Hexa.
That’s why I suggested to refine or work on the mesh. It has been very useful for debugging faster but now the mesh could be to raw.

By other hand I have also seen before models exploding when they are expanded with a unique element very large in depth.

Have you consider the corner radious geometry?