EdgeLinesFactoryProcessDuplicatePositions Property

When true (by default) then the mesh is first processed so that all duplicate positions (positions that have same x, y and z coordinates) are combined. Duplicate positions are very common because they are required to create sharp edges by defining different normals for each position. If you are sure that your mesh does not have duplicate positions, then you can set ProcessDuplicatePositions to false to significantly improve the performance of edge generation.

public bool ProcessDuplicatePositions { get; set; }