Greetings. This is my first post here, and I'm also new to the drafting world in general (just finished school). Anyway, we have some rather large assemblies here where I work, most comprised of sub assemblies. In order to rotate the model we have to turn off the edges and just use the shaded model or it bogs down something fierce. Not to mention the 2 minute (no kidding here) save time. I'm running SW2009 64bit, no service pack on a Dell Precision T5400 with Quadcore 2.0ghz and Nvidia Quadro FX3700 graphics card, oh, and XP 64 bit. I was thinking there's enough computing power there, so maybe some tweaks can be made to smooth/speed things up. Most of the sub assemblies were done on older versions of SW, could that have anything to do with the lag? Thanks for any help.