I can't see any difference creating a smoothed polygon model / a surface from a "3D" segmentation mask when changing the properties.

To reproduce:

• start MITK, open the (multilabel) segmentation view, load an image
• create a "3D" segmentation by drawing a segmentation mask on multiple neighboring slices
• create a smoothed polygon model / surface using the data manager context menu on the segmentation node
• open the preference page of the corresponding view and change the values of the preference "Smoothed surface creation"
  • (btw.: observe the difference for both segmentation plugins)
• create another smoothed polygon model / surface using the context menu
• compare both surfaces in the 3D render window

--> no difference in smoothing / rendering