weird artifacts, faces look overlapped when importing fbx from blender

[gnuraRavello (halfcrumpled)]

I have this artifact every time I imported FBX from Blender,

please help me, I already search around but didn’t find any answer

[ClockworkOcean]

[gnuraRavello (halfcrumpled)]

Thank you! that fixed it

[gnuraRavello (halfcrumpled)]

apparently it did work the first attempt, but after that eventho i applied the auto smooth is still have the artifact when i import to UE5