Done for an awareness ad in the UK last year, and then modified it to fit my own fictional ad this year. VaTech stands for "Villatech". My own dream creation. Click here for more views. https://www.artstation.com/artwork/dgXoQ
Turn off grp/groups when exporting [its option in expert tab ] If this doesnt solve the whole issue use weld identical points [its inside geometry/modify topology]
Your problem is on modelling side. I see same huge shading gradients on your mesh too. And while normal map can theoretically counter-measure them in a perfectly "synced" workflow you would never get it looking perfectly right in actual game anyway . 8 bit normal map with compression just doesn't have enough precision for…
Decided to go totally low poly on this kia badge has a subd modifier on it, but the rest is all low poly ish I like the control that poly modelling gives you
after a couple of trial and errors i decided to make basic shape first. And then modify it to something different. It's kind of my way of concepting:))