[NaS]

How you mean "Streamer can't load 2 objects" ?

Well if there are many objects, you should lower the stream distance of some of them to avoid all objects being streamed from far away.

Or use the following function in OnGameModeInit:

Streamer_VisibleItems(STREAMER_TYPE_OBJECT, 800);

This allows streaming 800 objects at a time.
Try to decrease this to 600 to see if the problem still occurs.