Custom shader hair in Vision Pro looks blurry.

In the 2.12 version of Vision OS, I created a custom shader graph for hair, which consists mostly of basic nodes supported in the Unity manual. However, when I packaged it for Vision Pro, the character’s hair appeared very blurry, like a mosaic.
The hair only becomes clearer as you move closer to it. When I am right next to the character model, the scattered hair strands display normally, but the denser hair strands on the sides still appear blurry, as if an LOD (Level of Detail) mode was automatically activated.
However, I have not set any parameters related to LOD, and I only used a black and white hair texture map. Could it be that Vision Pro or Vision OS has some official settings to save resources?
Initially, I thought there might be a problem with my shader graph, so I created a new one connecting only the color and transparency nodes, but the result was the same. I also used the built-in URP lit shader from Unity, and after packaging, the effect was the same.
How can I resolve this issue? I confirm that I am using RealityKit mode for packaging.