I do not know why but had noticed a long time, now posted here to find out what the problem texture 3d model.
In the next lines one sees well, but far longer, the texture is poorly modifies.
Have searched the forum for the same problem but have not found the solution.
You fixed the issue but without finding what was really causing the problem. The problem is caused by the texture mip maps. You could turn them off but if you want to keep them then turn the anisotropic filtering up higher and will make it look better. The lower the number the blurrier it looks at angles. You can change it per texture.
Now, the beautiful and fantastic quality settings have the aniso enabled but all others have it disabled. That is why anything other than fantastic and beautiful will make your textures look like in your pictures. However, you can change that in the quality settings of your project. So you wouldn’t need to play on fantastic to not have the blurry settings. Just make sure you enable aniso filtering on other qualities.