Whenever I go into LookDev mode with this Cynder model I ported from SFM (which was originally an .mesh.ascii file) a strange graphical glitch occurs where I can see faces glitching through each other.
In rendered mode it is completely fine, so I don't know what's going on. Because the faces show through each other in edit mode I'm thinking there's something wrong with the mesh but I'm not sure what.
I have many other models that I've imported from SFM into Blender the same way and they've never had this problem before.
Help would be gladly appreciated, please respond asap.
[EDIT] Blender file below: