As you can see, there are big chunks of triangles everywhere. They are pretty big and it's not nice to see. Even putting the red material took no effect.
I also tried to export the mesh in .FBX format in Unreal Engine 4, but nothing changed. Still not sure if it's a rendering configuration problem, or I have to find a way to smooth the mesh adding more polygons.
Is there a way to solve this? Thanks!