A7.1 Increases the impact range of dynamic lights. Normally the range is internally increased by an offset of 128 units over the lightrange value for making sure that vertices of tesselated surfaces are affected by the light. Increasing the range will prevent that coarse-tesselated surfaces are unaffected by low-range lights, but has the disadvantage that lights will be suppressed when more than 8 affect a single mesh.
25..250, default 128
d3d_lightres = 200; // increase range of dynamic lights