Getting the most correct VR model from Navisworks

Hello all,

Recently, we have been using Prospect to check up on our ship models. Problem is that quite often, representation of the model is not correct in Prospect. Have anyone researched how to get the most correct models into Prospect in terms of accuracy of the geometry? We are using Navisworks, which shows us perfect models that we have modelled in AutoCAD environment (specifically ShipConstructor). I have usually used the "old" way of adding the model to Prospect; exporting to .fbx and importing into Prospect. This has been because of some errors using the plugin (which I think may come from the complex shapes (curved plates, hull shapes). The Navis models are not too big, usually around 150 MB. 

Dos anyone have any ideas on how we can increase our experience with VR?