Texturing A bullet Brass pure/Metallic problem

[captaincael 0]

Hello Forum am encountering a issue when i apply a fill layer of any metallic material (Brass pure, Aluminium pure, etc all have this problem) Screenshot bellow, i made the model and UV mapped it in blender 2.8 and exported as an FBX and because am really new with Substance painter i have no clue on how to fix this and I've been looking for fixes on google to no avail

[CAGameDEV]

Post your log file:

https://docs.substance3d.com/spdoc/exporting-the-log-file-128745475.html

Also that UV unwrap isn't ideal.