cvar_t r_drawportals = {0, "r_drawportals", "0"};
cvar_t r_lockpvs = {0, "r_lockpvs", "0"};
cvar_t r_lockvisibility = {0, "r_lockvisibility", "0"};
-cvar_t r_useportalculling = {0, "r_useportalculling", "0"};
+cvar_t r_useportalculling = {0, "r_useportalculling", "1"};
cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};