Specify your room divisions and spaces to have the least impact on performance.
When creating rooms and establishing the spaces of your model, consider the following best practices.
Only select the Room Bounding type property on linked files if they are absolutely needed to bound volumes (rooms and spaces).
Revit needs to process these additional boundaries, affecting model performance.
If two levels share the same elevation,
Revit performs better if all rooms are placed on one of the two levels, rather than dividing the same rooms between the two levels.
Promptly resolve warnings about overlapping room boundaries.
Avoid coincident room separation lines overlapping each other and overlapping walls. To locate room separation lines in a model, create a wireframe view template with walls and room or space separation lines visible.
For room or space separation lines, set the color to red with a heavy line weight so they are easy to identify.
Turning off volume computation can improve performance but will disable much of the volume analytical functionality used by MEP features. When volume computation is off,
Revit represents rooms as simple extrusions without considering ceilings, roofs, floors, or other upper or lower boundaries. The volume computation setting is saved in the
Revit template, so it can be set as off by default and only turned on when you need to do the following:
Show more accurate room color fills in section views.
Have
Revit compute the volume numbers for each room prior to printing scheduled room volumes.
Export a gbXML file.
Perform building performance analysis.
Account for the location of elements in volumes based upon the bounded volume geometry.