Have a little issue. We have a workstation with the following specs: Intel i7 Lynfield, 16gig DDR3 RAM, 500gb HDD, Nvidia Quadro FX580 Screen card. OS is Win7 pro 64 and screen card driver is 266.45 - also loaded the performance drivers. The problem is that it takes almost 2 hours to do an import of a small (16MB) autocad drawing. The program only uses around 12% of the CPU power and also seems to freeze every now and then. The total memory used never goes higher than 8GB - any idea why it does not work full steam?