Pretty simple dynamic cloth works with P7. Only more complicated ones tend to crash.
I stopped developing dynamic cloth because anything I have started is to complex for P7.

I am seeing more and more dynamic items but they are not use to P7 owners.

Dynamic cloth is mutch easier to create than conforming cloth. But I'm not sure if most of them are unusable with raytraced lights anyway. This is because the geometry for dynamic cloth should be "distorted" (with special methods) and not regulary ordered as usual.

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