Laszlo,
The attached screen capture shows the differences in polygon count between Solibri and ArchiCAD.
Some members, such as the I beam (running lower right to top left), seem to have a similar number of faces in both programs. Solibri identifies this as a beam.
Other members, such as the CHS struts with end plates, have far more polygons in ArchiCAD.
However, the model in Solibri is navigable with ease and shows no delays whereas navigating the model in ArchiCAD is very slow.
PS: Working on getting a Revit file from the engineer with just a couple of members in it for testing.
Matthew Johnson - P O W E . Architects
AC25, Windows 11 64bit
Dell Precision 5520 i7 w/ Nvidia Quadro M1200 4K dual
i9-12900K w/ Nvidia RTX 3080 4K
I'd rather be sailing.