[NaS]

150? No. The streamer is (by default) set to a limit of 300 (or more?) objects (per player at the same time). And even without streamer, 400 to 500 are no problem. The only thing that could happen would be a crashing client, but not just disappearing objects!
Btw he already uses the Streamer. He does not have to convert anything.

First of all, do you even have that much objects created in that area?