r_lodCurveError

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

Usage:
/seta r_lodCurveError 250
then do:
/vid_restart

Values: between “0” (always drop curves) and “10000” (never drops curves)
Default: “250”

Note:
Setting r_lodCurveError to a smaller value helps (increases) your FPS (Frames per Second), so you will be able to see the movement smother.