Since you did mention about the Software OpenGL was unchecked - have you tried checking to see if it's worse or better?
I recently upgraded my card to a gforce 4 mx , and applyed softquadro to
> quadro 550 xgl. but now when i rotate, even the smallest part, i get this
> slumpy movement. I've tryed everything : uninstalling and reinstalling of SW
> : nothing. Reinstalling drivers with and without softquadro : still nothing.
> Tried old drivers, recent drivers, and up-to-date drivers: more of the same.
> And this curious fact : the slumpy rotation is the same with a small part or
> with a big 553 parts assembly !! it don't get slower, the speed is the same
> as a small part ! (the software OpenGL option is uncheked, so the problem is
> not from there), Please help me !!. Ho, and the most curious fact is that
> autocad, inventor ( tryout version), and even Catia are really much faster
> with the new card with soft quadro, i can rotate a 300-400 parts assembly
> with no lag at all !. If i reinstall the old card ( a Riva tnt ultra) i get
> back the smooth rotation, and everything back to normal, but i cannot work
> with big assemblys anymore ! , I hope somebody can help me with tis issue. > Thank you.
>
> Luís.
>
>