When changing a color using the Levels panel Material, if an object is using Soften edges, you will not get immediate color change in the edit window, only the object without soften edges. However when you apply the color all of the objects update. You must have RENDER turned on in the window.
I can’t show a good case yet but I believe this will also lead to a crash in more complex models.
hi @paul.hecko pls run _SystemInfo in Rhino and post back the results. There are some reported issues with edge softening and I would like to verify if that’s the same.