Optimizing big scenes

honestly there is a lot that goes into optimizing a scene. A big factor is getting rid of shadows for objects far away, and very far objects drop the textures down to something like 64p because there is no use for anything high on far objects if your going for something like Warzone. Finally objects/meshes need to have lod's that at the farther ones it should drop dramatically. If you look at warzone buildings through a 12 times scope for about 800 meters away you will see they have no detail, and are just blobs of around 1000 tris. In all the farther you are away the worst everything should get. Also get rid of all items inside houses/buildings as soon as possible. These are a big workload on warzone and they make sure they are all gone after around 200 meters and then the building is all that is rendered. Hope some of this info helps you and others looking for solutions.

And how to get rid of distant shadows and squeeze textures to a minimum?

The second thing that is very important https://docs.aws.amazon.com/lumberyard/latest/userguide/component-occluder-area.html

Also look at VisArea and portals

Neither the portal nor the visarea, occluder do not raise enough fps. On the stage, the fps is held in the area of 30... Can someone advise me?

If you hide all the scenes from the stage, the phps are still very small. In the editor of phps 10-15, which is very bad