Black artifacts/lights when applying morph targets?

I dont really know what else to try. Im working on a character in Maya. Exported it to UE and when I apply the blendshapes/morph targets they work correctly except one on the elbow.
As you can see in the attached picture, it gets distorted/artifacts in the specific area. The imported file is a skeletal mesh (fbx).
I tried exporting a obj from Maya with all the morph targets already applied and somehow it works fine, but sadly its just an obj.

I searched through forums and also tried checking the Force all skinned meshes to recompute tangents option inside project settings, but it didnt work.

Any idea on how can I fix this issue? Even if I had to redo all blendshapes from scratch… anything will help, thank you so much in advance!