Some lag is also apparent in drafting, again it is more noticable with multiple elements selected.
Thanks again for pointing me to Polywell - my experience with them was terrific. We are not sure what specific settings you will need for formZ, but you will probably want to make some setting to accelerate 2D or 3D, depending on whether you are working in Modeling or Drafting. I'm running right now with all the default settings. I'll make another post if I run into more trouble with the card. Thanks for the help.