Wall perimeter settings in 2.12 vs 2.8.3

We have an object with somehow thin walls and in the new ZSuite the walls have 8 perimeters which make the object very hard (it’s printed using elastic material).

Tried the “Max wall thickness parameter” with no success. Is there a way to have walls with thinner perimeters in the new ZSuite?

obiekt do druku z suite 2.8.3.zcodex (3.0 MB)
obiekt do druku z suite 2.12.zcodex (2.5 MB)
obiekt do druku zsuite 2.12.zprojx (2.7 MB)
obiekt do druku.stl (620.6 KB)