Civil 3d users are encountering slowness opening files. This is due to the delivery of a file AeccNetwork.dbx that bloats the files.This can happen in all versions. It happens in Civil 3d or any vertical using the Civil 3d object enablers.Autodesk has posted fix instructions with links in this document.http://forums.autodesk.com/autodesk/attachments/autodesk/66/310541/1/autodesk_autocad_civil_3d_performance_enhancement_tool.pdfAs an example a bloated file we tested took 10 minutes to open. After clean-up the same file took 50 seconds.
According to Autodesk every file needs to be cleaned to see the improvement.
I will post a process to simplify clean-up in ProjectWise on Monday
The Blog discussing ways to clean up the files has been posted.
Methods for Mass Updating files in ProjectWise