I have found that once you go over a certain number of people in a single Revit file, the file performance tends to suffer significantly. I have heard that autodesk actually recommends no more than 6 people in a file at a time, but have never found any official documentation to support that.
What is your experience? Your most people in a file at once? Your average number of people in a file? Any information regarding autodesk's recomendations?
Thanks!