Intersection of parts of the mesh after generation

[_Aka_]

You are right, you can't use the Optimize option of the Path tab with that solution. But don't worry, I have another solution that solves this issue plus is editable with scene nodes. It is a modification of the Shape Extrusion module that will allow to override the used tangent and orientation (up vector) with a fixed value instead of using those of the spline. Here is the result:

https://postimg.cc/HrPNcVbP
vs
https://postimg.cc/9RygnbKv

I will send via email modified code and example scene


Have a nice day