It takes really long time to open AutoCAD Civil 3D drawing from ProjectWise.
It takes quite a lot of time to load the data shortcuts from ProjectWise when using the ProjectWise Caching server to connect to the datasource – ProjectWise needs to load the file to the caching server first and then pass it to the user.It seems that there are some issues in the ProjectWise 08.11.11.111 with this operation.
There were some improvements in the ProjectWise performance in SS4 RU (version 08.11.11.559).
To resolve the issue you should upgrade the ProjectWise Explorer to the SS4 RU version.