Managing Revit File Size & Performance
Overview
Every project is different, and there is no exact formula for keeping a project file size down. The listed items below are generally what to check and start with in order to reduce file size.
File Size ~ Performance
Roughly speaking, file size = performance, as the larger the file, the longer it will take to run, open, sort through its database, etc. So if you are experiencing revit file lag, generally the first step is to try and reduce file size.
Quality Computer Caveat
As a caveat, quality computer gear is required. Unfortunately Revit is a bloated program and Autodesk has done virtually nothing to help with this problem. So with the size of the files, you are unable to run larger revit files (500mb+) on mid-range laptops efficiently. It's possible (and keeps getting easier with more advancements in computing), but you will end up reducing your multi-tasking ability and things are bound to slow down a bit.
Most Important — Understand… File size is going to increase.
There is a lot of information being put into a database that is going to increase the size no matter what you do. The main goal with Revit isn’t to keep the file small, but to have someone actively monitoring the file so it doesn’t get bigger than necessary. This person, (BIM Coordinator) is keeping tabs on the file and progress so that things won't get out of control. Basically, the idea is to plan ahead to minimize issues down the road.+