OK.. I just tried and I can't replicate that pokethru issue at all...

I DID set the cloth density to something a little softer, but other than that, I left it as is. Only thing checked is Clothe Self Collision.

So how DID you apply that morph? When I made mine, I had the default M4 (zeroed, since his default pose is a little different from the zeroed pose) on frame 1, and at frame 30 he is fully morphed (Superhero at 1 and Bulk at .. something bulky L) and posed.

He both bulks up AND poses during the simulation. And there's no pokethru anywhere.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.