I tried to test (texture) one of my objects from the last collection (Wall Tube Mechanism Props 1 - 20 pieces). I created a mesh maps in a Marmoset Toolbag , pointed the high-poly object to the same object. I imported the object and the mesh maps to Adobe Substance 3D Painter (the mesh map can be created here as well) and spent 2 hours on texturing. Rendered in Marmoset Toolbag. You can download it for free