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Falling FPS with multiple objects

A problem has appeared with low fps. It comes when a lot of static meshes putted on the scene. LOD System give some positive effect on FPS but it is not enough anymore. I use 1 Material and 10 Instances from it. Also, I do not use tessellation. Each mesh has it own poly count from 100 to 3000. The Usage of Cull Distance Volume gives fast disappearing of the object, no smooth disappear and that’s why, I really do not want use it. If there are any other variant and methods of multiple objects optimization?

If you have too many draw calls you’ll have to consider how you can simplify the scene–use less materials, combine objects that don’t need to be separated.