Egon, is this project published somewhere?

I didn't say that the objects may overlap each other. For the overlapped objects I set visibility (obj.setVisibility(false)). And fps has improved.

Thanks!
My device is HTC One V.
I don't use any textures, only setAdditionalColor.

Unfortunately, I can't reduce the number of objects. Is the only way merge objects to one (In app I need to choose each object by touching)?

First of all, thanks for the wonderful 3D engine.

I create Android app with many object3D. I need to know the parameters of each object, such as сenter, vertices, bounding box. Each object consists of 2-20 triangles and will respond to collisions (setCollisionMode(Object3D.COLLISION_CHECK_OTHERS)). And I use forceGeometryIndices(true);

The results:
186 Objects  - 24 fps and 186 draw calls per frame;
552 Objects - 12 fps.

Phone:
512 MB RAM
CPU    1 GHz
GPU    Adreno 205
Android 4.0

How to reduce draw calls and improve fps in my case?