For a very long time the graphics ability of Revit has dragged behind almost all other 3D content creation software in terms of screen graphics. Users spend a great deal of time wathing the blue wheel spin waiting for screen regeneration. The same models with the same information\paramiters has much more interactivity than Revit. The 2017 release had a slight bump but nothing near what can be achieved in other Autodesk packages authoring packages. Vulcan seem to be the way forward that is hardware independent to high performance.