Solid Edge puts lots of pressure on vid cards. Once something like that happens, it time for a full reboot. On our BOXX machines with really good vid cards, we have to reboot typically every 3 hours or so becuase the vid memory does not clean it's self up. Drivers and vid card configuration have a huge impact. Once I moved up from a K4200 to an M8000, I can no go most days without the need to reboot.