What is the scale of your asset? If this is a gigantic scale, you might be hitting precision or lighting limits. It's best to work within real-world scale. So for example if this was a streetlight or electrical pole, it would be about 12 meters tall.
Hey, while texturing my last object a question come to my mind. How game studios approach to texturing. I mean, they are using texture libraries like Substance 3D Assets, or they are creating all of the textures, materials etc. from scratch by usage of Sampler (there come next question - are material artists are just…