When did you came back to WD? I thought you had enough of it Anyways, you can increase shadow sharpness in "defaultrenderconfig.xml". For shadows from electric/street light increase the value in "ShadowMapSize" For Sun shadows you can increase the value in "FSMShadowMapSize". But even with default value "4096" (which is big) on Ultra setting they're not that sharp. I guess you can achieve the sharpness without increasing FSMShadowMapSize further by tweaking other settings that have "FSM" abbreviation. Try "FSMShadowQuality" for start.