Opening a model through Docs, or even opening a Model Coordination View that has been "Saved to Docs" works really well and is smooth. However, opening the same models within the Model Coordination module (in a Coordination Space) is laggy and the frame rate suffers. The Model Coordination viewer should be on par with the other model viewers, especially since that is the module where model analysis is being performed and being able to fly around smoothly is essential.