When using a base spline that has curves with a tight radius, you get badly deformed geometry and edges that cross over.
This problem occurs when the spline's interpolation value is too low so the geometry is not able to accurately follow the corner. Try increasing interpolation directly within RailClone by going to the Style rollout and adjusting the Curve Steps value.
You can see in the example how this improves deformation.
In order to bend correctly around a corner, the segment's length on the Y axis should not be larger than the radius of the curve, otherwise edges will overlap. The animation below helps to illustrate why this occurs.
📄️ What are the suggested settings to use billboards in my scenes ?
It depends on the renderer. These are some tips:
📄️ What are the recommended settings to use high-poly 3D trees and render complex scenes with Forest Pack ?
Forest Pack includes native geometric shaders for the renderers listed below, making it possible to render scenes with millions of high poly trees, meshes and proxies:
📄️ Rendering artifacts in Mental Ray
📄️ As soon as I use Forest Pack with Civil View elements, Mental Ray Max crashes, what is the problem ?