Do not place the model far away from the origin. The further away from the origin you model, the less precise all the computations become.
Mark global coordinates as labels instead of actually using them during modeling.
If you need to use building site coordinates, drop the first digits if they are always the same. For example, instead of coordinate 758 375 6800, use 375 6800.
Base points allow you to use another coordinate system needed for interoperability and collaboration. You can use another coordinate system for inserting reference models and exporting IFC models. When you use base points, you can keep the coordinates small and locate the model wherever needed. You can create as many base points as you need, and select one of those to be the project base point. For more information, see Base points.
Switch on the Select reference models selection switch only when necessary. The speed of zooming and rotating may be affected by this switch especially in large and complicated models that contain reference models.
Create holes with the Create bolts command instead of using part cuts with round beams.
Use studs to model small straight round objects instead of small round beams.
Model lifting hooks and other embeds with reinforcement bars instead of round polybeams.