Proxy graphics store the last viewed image of AutoCAD Civil 3D objects, which lets users view your drawing without modifying the original objects. Proxy graphics store only the display
representation for the current active viewport.
Depending on the complexity of the drawing, a drawing saved with proxy graphics can become extremely large, slowing drawing
performance. It is recommended that you make a copy of the drawing without proxy graphics before turning them on in the drawing
you want to share with other users.
To generate proxy graphics
Set up the drawing to display the view for which you want to create proxy graphics.
At the command line, enter Proxygraphics.
Save the drawing.
To turn off proxy graphics, enter Proxygraphics, and then enter 0.