Reduce surface texture distortion
Surface textures are mapped to a surface’s parametric space. That is, the XY values of the texture are mapped to the UV parameters of the surface. If the surface’s UV parameterization is non-uniform (that is, the U and V isoparametric curves are not uniformly spaced), then the texture appears distorted. This often occurs when mapping a surface texture to a curved surface. The greater the surface curvature, the less uniform the parameterization, and the greater the texture distortion.
If a surface texture appears distorted on a surface, do one of the following:
See Chord Length in Render > Multi-lister.
See Projection Texture Parameters in Render > Multi-lister.