yes internal BGE LOD may be have C or C++ procedural and this 2 languages are best to made this.I go use internal for grass trees rocks only.i think will help to FPS.python is good bu not for all in BGE.like i said will work with objects with max 500 faces to reduce to 200 to 100 and will made for distance > 200 will put empty mesh understand? no invisble but mesh without vertices effect like invisble but not is
i see here