Plus you have csg doing this kind of carp
Thats a single box csg brush, converted to the static mesh you see next to it, both cloned once and rotated. after rotating and moving CSG brushes they add an insane amount of unnecessary geometry. (no vertex movement, purely moved as a whole and rotated as a whole.)
nothing is intersecting either.
No wonder csg is carp in ue4.
ALSO notice how the static meshes do not cull itself behind itself, there is clearly static mesh behind the wireframe, notice the csg ? nothing. Occlusion OP.GG