Limit to stock objects in a scene?


I'm creating a scenery of a huge airport with tons of stock objects (about 3200 so far - most of it is clutter).

At one point I noticed that some random objects has started to disappear from the sim - either on scenery load or after moving the camera around. It could be the whole model, or only part of it (cars without wheels etc.).

While in P3D4.3 it was tolerable (a missing car here and there), P3D4.4 has started to remove large and important objects like buildings. FSXSE doesn't remove anything permanently, but many objects are disappearing and reappearing again when I'm moving my camera.

Can anyone please tell me what's causing this, and how to prevent this behavior?

My guess is that this is some kind of limitation of the ESP engine, so I'm leaning towards replacing most of the stock clutter with my own custom models (grouped and heavily LODed). But this will be very time consuming, and I'm not 100% sure it will help.
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When I started reading your post, I did think this was due to a draw-call limitation, I do know that there is a limit to the number of triangles per draw-call, so that repeating objects can reach this limit. But this is normally a fixed limit, whereas you mention disappearing objects when moving around. So....
It sounds like the issue here:
I posted on the Prepar3d forum, and although there seems to be a few people affected, and some of the big developers are aware of it, we are still no closer to a solution.
But this is normally a fixed limit, whereas you mention disappearing objects when moving around.
Disappearance on moving is probably caused by more surrounding objects being loaded & rendered, which overflows the limit.

This is definitely not a P3D4.4 problem - I've seen the same behavior in 4.3, 4.2 and 3.4, and in a much, much simpler scenery. It just got worse in 4.4. Earlier it was mostly cars and other small clutter, now it's completely random.

By saying "some of the big developers are aware of it" - you mean this could happen with custom models too, not just stock stuff?

P.S. I'm using P3Dv3.4 and FSX compilers for all my work. Nothing P3Dv4-specific at all.
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