help with curve in max

i have problem with curve in 3ds max  , i have import model 3d dwg

kung galing to ng cad sa file link manager "acis surface deviation" gawin mo from 1 to .001 or pwede namansa maxmo nalang edit convert to editable poly tapos dagdagan mo ng mga vertex pwedeng refine or chamfer mo yung mga edges.

kung galing siya ng MAX line, tick mo yung interpolation then adaptive....

Ang problema sa adaptive ay - it produces a lot of edges lalo na if you extrude the objects. If you want full control regarding the number of vertices/edges like I do, turn on adaptive but add an interpolate spline modifier and adjust the value. This will force the spline to have a specific number of edges but still try to maintain the correct curve (from the adaptive setting).