“3D OCD” I love that haha. It’s very prevalent in this field 😅
I wonder why the global UV object didn’t seem to have an effect..it’s whole purpose is to make seams impossible across all objects using it. And it will be used throughout various materials / objects. Double check that to make sure it’s setup correctly and that there’s only one of them 🤔
Feel free to share your .blend file if you’d like me to take a closer look!