When fragmenting the layer 'strings' the shrink tension of that layer is only 'pulling' on the lenght of the fragment and not on the full lenght of the object.

Now this seems to be working exellent, though you might not want to have holes in every larger object you print. But hopefully someone can figure out a way to adopt this knowledge into some kind of standard option the software to make 'fragmented layers'. If an object is printed in ABS and is larger then x cm thenprovide an oprion to configure if layers should be 'fragmented'. And how long the fragments should be.