Then select the curve
Press TAB
write rebuild (Rebuild ReBuild etc... but without space) and give a reasonable number of points by familly curves
you can make a shortCut on this Rebuild function just write Rebuild on the second column!

Make some zoom for see if there are no much points in some place
So here in the back deck
You can kill N° 1 , not 2 it's the vertical line, 3

etc...