In ArcGIS Pro, the 3D Analyst tool of 'Import 3D files' fails with OBJ file having 5 or 10 millions vertices, but works with file having 1 million vertices.

Workaround

Use CityEngine to drag the OBJ files as static models to a CityEngine scene and export these models to File Geodatabase or SLPK for example:

Navigate to CityEngine and import by drag and drop. Refer to the following documentation: https://doc.arcgis.com/en/cityengine/latest/help/help-import-drag-and-drop.htm for more information.

Refer to the following documentation: https://doc.arcgis.com/en/cityengine/latest/help/help-import-obj.htm for more information regarding importing OBJ (Wavefront).

Refer to the following documentation: https://doc.arcgis.com/en/cityengine/latest/help/help-export-models-overview.htm for more information regarding oh how to export a model.

Refer to the following documentation: https://doc.arcgis.com/en/cityengine/latest/get-started/cityengine-faq.htm and

https://mediaspace.esri.com/channel/ArcGIS%2BCityEngine/238781293 for more information.

Steps to Reproduce