The texture of my 3D Model looks blurry when I rotate it and view it at an angle to the camera. When viewed from the front, it looks sharp. Can this be fixed?

Yes, the degree of texture focus when displayed obliquely to the camera can be defined in the 3D Model Settings, under Advanced Options, "Tex. Filtering Level" option. Values close to 0 will make the texture appear more blurred, and with a value of 1, it will be completely sharp (as long as the texture resolution is high enough).

This field configures the use of anisotropic filtering and the degree to which the GPU allows it to be used. The more oblique the texture, the higher the AF value needed for it to look good.

By default, this option is set to 0 because it consumes fewer processing resources and the model will display more smoothly on your device. However, many other factors affect performance as explained in this post: https://www.3dvista.com/en/blog/how-to-optimize-your-3d-models/

But if not strictly necessary, we always recommend using values close to 0, especially in models with large textures.