Location of the “My Documents” Folder
In Windows, the “My Documents” folder is a virtual folder that can exist either locally, or on a remote network drive. Since Source Insight stores per-user data inside that folder, some operations can become slow if you locate this folder on a remote drive. In particular, if you are editing C# code, the .Net Framework symbol completion can become slow because the .Net Framework symbols are stored in “My Documents\Source Insight\Projects\NetFramework”.
If possible, locate your “My Documents” folder on your local drive. If you cannot do that, then you can set a registry entry to force Source Insight to use a local drive for the per-user data folder.
In regedit, find the key:
HKEY_CURRENT_USER\Software\Source Dynamics\Source Insight\3.0\Paths
Add a new string value named “UserDataDir”. Set the string value to the full path of the folder you want to user for per-user data.