Object loading/streaming issue

Hello guys,



I have some pretty unknown issue with my objects (CreateDynamicObject) everytime I pass it more then a "X" distance, they are just disappear! I tried this site "http://ift.tt/1C1qJPE; and when I type amount of 300/800 draw distance, It didn't help it, its just make it worse.



Anyone knows how to fix it?

Please let me know :-)



Thank's





Here is a ScreenShot of this situation:









As you can see this is the Police dept. & the city hall.