One of our customer using Dell Precision M4800 machine with NVIDIA Quadro K2100M Graphics card with driver 354.56 (which is latest driver and recommended on SolidWorks Website). Since last few days they were facing performance issue in rotating model and Zoom-in/Zoom-out the model. What we done is we run Diagonstics and we found the drivers are not updated(Previous driver 376.54) So we downloaded latest driver and installed it after uninstalling the previous one. Now what happened actually, it worked fine for one day though we have restarted the machine 2-3 times. But when user started machine on next day SolidWorks again shows same problem. So what could be possible solution? Please help us.