At the FSMS Manasota Chapter meeting 2016-05-04 I answered a few Civil 3D questions that may be helpful to others.
Q. Scott had a tool tip stick to his screen running AutoCAD Map 3D on a Dell Laptop. A. I had the same problem. Try updating your video driver.
Q. Dave asked about what to do with dwf files. A. Use them as an xref. You can snap to the geometry
Q. Kavin asked how to get Civil 3D to display DMS instead of DecDeg. A. Edit the Drawing Settings > Ambient Settings (tab) and edit the Direction format to correctly display Bearings. Edit the Angle format to display Central Angle and Degree of Curvature labels in DMS format instead of decimal degrees.