Curve PlanarSrf or Patch

I have this curve that i want to create a surface from when i tried using PlanarSrf and Patch
it gets the same result with sharp edges like in the picture I thought it may be just in the viewport but in render would be ok but it wasn’t Please help


curve promnade sharp.3dm (45.7 KB)

Hello - please see -


Ok, thank you
after i checked it i increased the mesh render quality and it worked the weird thing is that in the article it says the wireframe usually correct view but my wireframe gives me smooth edges not the jagged one