I'm working with a 3DConnexion spacemouse and I also use a regular mouse to manipulate models in CATIA V5R29. I've run into an issue where when I am in perspective render style mode in a product the model behaves as though it is in parallel mode with respect to manipulation. For example, when I zoom in to a product, the camera refuses to go through the product and instead scales down the zoom until it is essentially not zooming in at all, behaving as though it is in parallel mode. This makes it impossible to see inside products which is exactly what I am trying to do. Note that I am not having the same issues when I have a part opened.