make some research… all is bad… some troubles with rendering.
ok, lets start,
Test 1.
1.1 Remove all blueprints from scene
1.2 Remove all lights, all reflection spheres.
1.3 On scene static meshes and skylight (static) only. (all is baked)
1.4 Remove skylight and bake, have massive perfomance boost (look at pictures.
Test 2.
2.1.Have full scene.
2.2 Remove skylight(static)
2.3 Remove all SceneCapture(using for image on TV) and SceneReflection
2.4 Remove all lights.Scene have only one Directional Stationary light, all lights is static.