This is the famous armchair Poäng from IKEA with the footrest. I have modeled this object in Rhino 6 with NURBS, so the grid is perfect. After exporting to 3ds Max and other file formats like obj and fbx the grid becomes polygonised, but still very smooth and without any kinds of bugs. The third black-white picture is the fbx model. Looks for real pretty smooth... If you can export from Rhino keeping the NURBS geometry, I have added the 3dm file for you. You can download the whole 3ds Max scene with materials as an archive, rhino 4 and 6 versions, 3ds max 2018/19/20, textures separately, fbx and obj files. Enjoy the model!