HIDE ROOM SEPARATION LINES IN REVIT

Once you use Rooms in Revit you will surely have several places where you had to apply the "Room Separation" tool. The drawback here is that these are Model Lines, which means they are 3D objects present and visible in ALL views, including perspectives:

Their visibilty can be controlled per view: Visibility Graphics/Model Categories/Lines/Room separation. But I'd rather propose a way to control them globally through the whole project.
So far the method that has worked best for me is to assign them a white color and a dotted or dashed pattern. This way Room Separation lines are practically invisible in the majority of the model views.