What can be used to drape an High res Image over a DEM and get high quality results?

I have a High resolution Georeferenced Orthomosaic, as well as a DEM of that area. The pixel size of both is 20 cm. The data is in Tiff format.

I tried to drape the Image on the DEM in ArcScene, but the output doesn't have the resolution of the input Image.

You can see that the image appears blocky and pixelated. This pit must be about 40 meters in diameter, and looks much better in the orthomosaic.

Are there any other software which can be used to drape a georeferenced image over a DEM ?

While I'll prefer a free software, I don't mind a proprietary source, paid software.