> For the complete documentation index, see [llms.txt](https://docs.siminsights.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.siminsights.com/hyperskill/virtual-entities-vx/vx-publisher/special-considerations.md).

# Special Considerations

**Limitations and Constraints**

Some platforms require additional care when packaging assets. Platforms such as the Meta Quest or WebGL require assets to be optimized for speed and size. Failing to keep these considerations in mind can lead to poor experiences caused by inconsistent framerate and slow loading times.

In addition to optimizing assets, the following platforms require additional care and attention:

* VisionOS
  * For all mesh assets, the asset must have Read/Write enabled in the model settings. The [model import settings](https://docs.unity3d.com/Manual/class-FBXImporter.html) can be found by clicking on the model asset file (FBX/OBJ/ETC) in the Unity Project Folder. Failure to mark the asset as Read/Write will cause HyperSkill to close automatically when trying to load the asset in experience mode.