array modifier disappear when the game start

me again…
i try to make a road with the array modifier, its all work well until i start the game, if i play from the in car cam, the first block of the arry road is good and i can see all the road, but after i start to drive and pass the first block - all the road disappear.
i make some other tests and i see that if i start the game from a far distacne from the road, i can see it, but if i start closer to the road the road just disappear…
there is a way to fix this bug? or maybe its not a bug and i do something worng?

There are just a few modifiers that are supported by the BGE (such as the armature modifier).

Some modifiers are applied when loading the scene (like mirror modifier).

The other modifiers have no effect.

i download the upbge and it work there…