Configure the following settings in your drawing templates so that they apply consistently for all drawings created from the templates.
Function: Specifies whether to save proxy graphic images in the drawing. Proxy graphics require space in the drawing file and are required only for display in applications other than Autodesk Civil 3D. If you do not need to share drawings with users of AutoCAD or other AutoCAD-based applications, you can save space by turning off proxy graphics. If you do need to share drawings with AutoCAD users, consider using the Export to AutoCAD option, which explodes Autodesk Civil 3D objects to AutoCAD primitives.
Recommended setting: 0 (off).
Function: Specifies whether the REGEN (regenerate) command runs automatically (1) or manually (0). REGEN can be time consuming on a large drawing, so it is advisable to run it manually, when required.
Recommended setting: 0
Function: Specifies the circle zoom percent value, which determines the smoothness of displayed curves. Valid values are integers from 1 to 20000; default is 1000. Setting a lower number causes faster system performance in REGEN operations.
Recommended setting: try 50, then adjust up or down to suit requirements