Mesh issues encounter when importing .fbx from 3d Max to UE5

Hi, thank you for your response. Correct me if I’m wrong, you’re telling me that the triangulation which occurs is not because of the mesh but because of the shading/textures/maps which I have applied to the it?

I doubt so. I am aware that triangulations do happen when you cross platform in between softwares, such as max to skp/blender/etc. This will be visible when I display the mesh in wireframe or shaded with wireframe mode. However after applying shaders/textures/maps to the mesh and go into shaded mode only, the triangulation should not be visible, unless it is not of a flat surface.

By the way, the images which I have attached earlier have no shaders/textures/maps assigned to the mesh. Here’s another image which I have imported into Blender for your reference.