Found out how on my own, so I thought I'd share it. However, this procedure only applies to Macintosh owners. Final loading time: 5 seconds. To decrease the application bloat, and thus decrease the application load time, you need to have admin rights. Navigate to the Carrara 5 Pro folder, right-click on the Carrara 5 Pro application and choose Show Contents. In the Contents window, expand the MacOS folder. Move (don't delete!) the Presets and Scenes folder out of the MacOS folder to another location out of the main Contents folder. Ta-da - instant application loading time! If you want the pre-built scenes, shaders, objects, etc., don't perform these steps. You can gradually add back items you use on a regular basis, like the shaders or the plants or the pre-built aircraft models. Just be sure that you do not rename the presets folder or the subfolders and add only what you want to these folders.