I don't know how to create a normal map tile, that you mentioned. Do you have a resouce or example on this? Also, could you show me a good uv setup example? I'm baking using xnormals and the texture of the shirt is 1k and the shoe lace is 512x512.
There simply isn't enough pixels in your texture to capture the microdetail. As Jfitch said, you need to tile the microdetail onto your texture through the shader if you can't have higher resolution textures. Unfortunately, it's difficult to provide a good example for a 'good' uv layout since uvs are so specific per model.…