There are a few times, I posted a topic but I have not fully understood the answers. I work with Substance Painter and the result is stunning !! However , it is always the same, textures become ugly on Ue4. I know if it comes from Substance Painter or Ue4. Here is an example:
You will have to create a proper material for your mesh -> so export your textures - import them - create a material - add different effects (normal map, tessellation, reflection,… )
Depending on the textures that you have (normal, specular, displacement, diffuse,…) I can post you a step by step explanation
You need a good lightmap. After you make a good lightmap and import your (mesh make sure you uncheck make lightmap on import) you can increase the resolution of your lightmap to 512 or 1024 that should clear it up. Then it’s all material parameters.
Another thing, I don’t think you need an image texture for the orange bits, you should be able to just make a material in UE4 for that. Just assign a place holder material in your other software.
In substance Painter you should bake your maps in a higher Resolution, as you need. Especial the Normal Map needs to bake with
higher resolution and 4x4 subsampling.
In UE4 You always must use DirectX.
Set roughness and metallic to greyscale.
Be sure to select the Option to “compute Tangent space per Fragment” when building a new Painter File.
Set the export resolution to 8 Bit PNG and the normal errors will be solved.
Your unwrapping also has extremly waisted space. Before texturing you should optimize your UVs.
Hope i can help