cg_shadows

The cg_shadows controls distance at which curves are dropped (it makes the objects more rough after a distance).

Usage:
/seta cg_shadows 1
then do:
/vid_restart

Values:
“0” (no shadows)
“1” (basic shaped shadows)
“2” (contured but transparent shadows)
“4” (very hard contured and dark shadows)
Default: “1”

Note:
Setting cg_shadows off (0) helps (increases) your FPS (Frames per Second), so you will be able to see the movement smother.