3D display problems

Hi - I am having problems displaying 3D, especially up close - this shaded image is typical

OS = Windows 10
Graphics card = Nvidia GeForce 8500GT 512MB
monitor = Eizo FS2331

… any thoughts?

Christopher

How far is this scene from the origin?

Hmmm - a long way! I am building my model on an imported .dwg topographical survey and it didn’t occur to me to reset the origin. I think I had better start again.

I am returning to CAD and Rhino after many years’ absence and am shocked at how much I have forgotten!

Note that it’s only the display mesh that is in bad shape. The original NURBS geometry is OK.