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Hi Mr. Yuri, I sent you an e-mail reply with more details in it but basically the performance is poor with your model because it is structured as a polygon mesh with over 100,000 little flat faces and CAD solids are not designed to work with that kind of high density faceted geometry.

The main thing you would do to improve performance would be to use a polygon mesh modeling program to work with this kind of data instead of a CAD program like MoI.

- Michael

Hi Michael,
sorry for late reply (have new son and all).
Thanks for thorough analysis and detailed explanation. I appreciate that.

It is however quite time consuming.
I designed the model in a way that I don't join the parts as a model but export all parts as STL (making it sliceable and 3d printable as one piece)

And found out MoI3 cannot handle in timely manner those models.
MoI4 is much better in this application (and I believe in many others) :)

Juraj