Great! May it be then that you have to disable some kind of model rendering in the Solidcam options? I don't know the program , but many programs have tricks in the sleeve to speed things up. But some times the sad truth maybe that some programs simply are buggy and dont use well the PC resources. like Sketchup for example, 3 years versions and the same slow performance. Which starts to get annoying when you have entire CNC machine drawn using it.