Поля Gloss и Specular Color сброшены в нулевые значения.
А это исходная модель!
Выдержка из оригинальной справки. (NDL Gamebryo 1.1)
NiSpecularProperty enables and disables specular lighting computations. Note that most renderers will not incur a higher rendering cost with this property turned on unless there are also materials and lights that require specular computations present in the scene graph.
Specular Lighting and Performance
Specular lighting is expensive to compute per-vertex and may also incur added cost in rasterization. As a result, this flag allows applications to inhibit specular lighting (in order to increase performance) in subtrees that would otherwise use it. This technique may be useful on marginal hardware platforms or with objects that are too small or distant in a given frame to justify the expense of specular lighting.