Now another weird issue has reareded its ugly head.  When I run the simulation with soft decorated layers, it goes completely bananas and starts to fold on itself, even though self-collision is off.

I thought the soft decorated group was just supposed to follow the dynamics, and that the dynamics would not try to interact with the soft decorated group? Even though it looks like it is, in this scenario. It even happens if I just run a drape.

Has anyone ran into anything similar?

Meanwhile I am going to explore different venues of multiple dynamic layers.