Build wall with megascan and cube shape, but need more polygons for tesselation to show correctly

Development World Creation
2

Just increase the max tessellation factor in the shader files:
C:…\Epic Games\UE_4.xx\Engine\Shaders\Private\FlatTessellation.usf => Replace 15 with 64
C:…\Epic Games\UE_4.xx\Engine\Shaders\Private\PNTriangles.usf => Replace 15 with 64