Ok, here is the solution and why it is happening. Case 1: Hard Normals & Small Map In this case, the uvs of this piece are taking up a tiny piece of a 2k map. There are some minor seams around the hard edges due to the lack of resolution, but they aren't noticeable from distance. Case 2: Soft Normals & Small Map Basically…
When you want to bake Hipoly model on a low poly model you need for getting normal map, you cannot just take the low poly version for that. From the low poly version you need to modify the model to make it more friendly with normal business when rendering. Here is a simple example it will resolve you bug : Duplicate your…