@Shadow Of Death change values of these lines: I have given every value you have to change but i want to do it just paste my game config,it won't give you any problems unless you have a system better than a medium end pc.
<VehicleTimesliceMaxUpdatesPerFrame_Base value="4"/>

<VehicleTimesliceMaxUpdatesPerFrame value="10"/>

<VehicleAmbientDensityMultiplier_Base value="350"/>

<VehicleAmbientDensityMultiplier value="500"/>

<VehicleMemoryMultiplier value="500"/>

<VehicleParkedDensityMultiplier_Base value="50"/>

<VehicleParkedDensityMultiplier value="100"/>

<VehicleLowPrioParkedDensityMultiplier_Base value="50"/>

<VehicleLowPrioParkedDensityMultiplier value="100"/>

<VehicleUpperLimit_Base value="40"/>

<VehicleUpperLimit value="130"/>

<VehicleUpperLimitMP value="60"/>

<VehicleParkedUpperLimit_Base value="40"/>

<VehicleParkedUpperLimit value="100"/>

<VehicleKeyholeShapeInnerThickness_Base value="20"/>

<VehicleKeyholeShapeInnerThickness value="20"/>

<VehicleKeyholeShapeOuterThickness_Base value="40"/>

<VehicleKeyholeShapeOuterThickness value="40"/>

<VehicleKeyholeShapeInnerRadius_Base value="80"/>

<VehicleKeyholeShapeInnerRadius value="120"/>

<VehicleKeyholeShapeOuterRadius_Base value="185"/>

<VehicleKeyholeShapeOuterRadius value="215"/>

<VehicleKeyholeSideWallThickness_Base value="60"/>

<VehicleKeyholeSideWallThickness value="60"/>

<VehicleMaxCreationDistance_Base value="225"/>

<VehicleMaxCreationDistance value="255"/>

<VehicleMaxCreationDistanceOffscreen_Base value="50"/>

<VehicleMaxCreationDistanceOffscreen value="50"/>

<VehicleCullRange_Base value="251"/>

<VehicleCullRange value="311"/>

<VehicleCullRangeOnScreenScale_Base value="140"/>

<VehicleCullRangeOnScreenScale value="140"/>

<VehicleCullRangeOffScreen_Base value="100"/>

<VehicleCullRangeOffScreen value="150"/>

<DensityBasedRemovalRateScale_Base value="36"/>

<DensityBasedRemovalRateScale value="36"/>

<DensityBasedRemovalTargetHeadroom_Base value="10"/>

<DensityBasedRemovalTargetHeadroom value="10"/>

-<VehicleSpacing_Base>

<VehicleSpacing_0_Base value="1"/>

<VehicleSpacing_1_Base value="172"/>

<VehicleSpacing_2_Base value="150"/>

<VehicleSpacing_3_Base value="129"/>

<VehicleSpacing_4_Base value="110"/>

<VehicleSpacing_5_Base value="88"/>

<VehicleSpacing_6_Base value="55"/>

<VehicleSpacing_7_Base value="52"/>

<VehicleSpacing_8_Base value="45"/>

<VehicleSpacing_9_Base value="40"/>

<VehicleSpacing_10_Base value="34"/>

<VehicleSpacing_11_Base value="27"/>

<VehicleSpacing_12_Base value="22"/>

<VehicleSpacing_13_Base value="20"/>

<VehicleSpacing_14_Base value="19"/>

<VehicleSpacing_15_Base value="18"/>

</VehicleSpacing_Base>

-<VehicleSpacing>

<VehicleSpacing_0 value="1"/>

<VehicleSpacing_1 value="172"/>

<VehicleSpacing_2 value="150"/>

<VehicleSpacing_3 value="129"/>

<VehicleSpacing_4 value="110"/>

<VehicleSpacing_5 value="88"/>

<VehicleSpacing_6 value="55"/>

<VehicleSpacing_7 value="52"/>

<VehicleSpacing_8 value="45"/>

<VehicleSpacing_9 value="40"/>

<VehicleSpacing_10 value="34"/>

<VehicleSpacing_11 value="27"/>

<VehicleSpacing_12 value="22"/>

<VehicleSpacing_13 value="20"/>

<VehicleSpacing_14 value="19"/>

<VehicleSpacing_15 value="18"/>