Hi,

A 3D or 2D world can contains multiple scene and can stream scene too.

Is it better to have one PhysX scene which handle all or multiple PhysX scene for each scene is better ?

Thanks

It depends, I guess. The scenes will not be able to interact. So actors in different scenes don't see each other. Having multiple scenes probably will add a lot of complexity you now would need to handle manually. I suggest having one static actor for each chunk of level geometry and stream those in.