I'm importing a land survery from CAD 2004 into SketchUP 6 pro and straight lines are coming out crooked, but also, as most surveys show radii as many short lines connected together, when I import them they come out very jagged.

I've cleaned up the files in Cad, exploded everything into lines and arcs, set the z values to where they need to be and then converted everything into connected polylines and put it all on appropriate layers. I don't think the cad file can get much simpler, so I feel the problem is on the SU end of things.

Also, when I'm drawing in SU, lines are actually bending as I draw onto other lines. My hunch is that maybe my graphics card might not be powerful enough, but I'm not sure.