Texture appearance issue


I made this column part in 3ds max and every property was adjusted well but when i imported this object into unreal engine 4 then the appearance of the column part is changed (distorted)
As common the top the object looks good without any problem but after importing you can see that the appearance is broken.
This problem is seen everywhere but in the most pat on the top of the object. The distortion is shown in the form of triangles on top of the object.
What can it be??

As i remember i fix it in 3ds max switching channels from green to red or blue but i did’nt find such menu in UN4

I think your UVs are probably screwed up. Try looking at them in the UE static mesh editor.