An improvement in Revit's 3D graphics is in the works

https://www.bimoutsourcing.com/3d-graphics-in-revit.html

There are going to be many changes and improvements to the 3D graphics of Revit. A new graphics engine will improve Revit and 3ds Max performance, among other applications, according to Autodesk. A ray-tracing engine will also be integrated directly into the viewport in the 'next-generation' system, boosting visual quality. Regardless of the graphics hardware and complexity of the model, it should be possible for users to switch between a shaded view and a photorealistic view easily.