Datasmith import to TwinM crashing

Navisworks and Revit in use - Revit can be more directly linked to TwinMotion so no big issues there. Navis exporter installed, exporting level detail tried at 3,4,5,6 and 7 . Exports file out with file size around 110mb to 69mb. Import to TM and crashes about 10mins in. Graphics card is Nvidia RTX Pro 4000. Any advice on this? Trying to create renders for work and not getting very far. Im relatively new to TM and Navis. Thanks

can you tell me the issues you’re facing