The Universal Render Pipeline of Unity is a package that could improve the rendering textures. You can easily access this package in Unity.
In this article we will go through the process of upgrading project to URP.
If you open a game project that require URP yet have not installed in your Unity, you might found the model in project would look like this.
To access URP, first we need to install it in Package Manager.
Then search Universal to locate URP, and install it.
After installation, create a folder in Project tab and create a pipeline asset.
With this asset, we can change rendering setting in Project Settings window. Select Edit> Project Settings> Graphics
And change the settings to the asset you just created. Then your 3D models should upgrade to URP.
If it is not appearing, you can also upgrade it manually.
Enjoy the HQ texture!