Antivirus (Civil 3D performance)

If you have a suspicion that your antivirus software has an impact on Civil 3D's performance, exclude the following Autodesk folders from antivirus protection:

• C:\Program Files\Autodesk
• C:\Program Files\common Files\Autodesk
• C:\Program Files (x86)\Autodesk
• C:\Program Files (x86)\common Files\Autodesk
• C:\ProgramData\Flexnet
• C:\ProgramData\Autodesk
• C:\Users\%username%\AppData\Roaming\Autodesk
• C:\Users\%username%\AppData\Local\Autodesk

Adding an exception for .dwg files can be helpful.