Project for Oculus Quest works fine on preview with link but launching build seems messed up

Hi  RealityProductions , 

Due to the limitation of computing power and its architecture, we have limited rendering options in quest devices.

That said, water rendering in mobile devices may have problems.

 - Shader complexity tends to be very high.

 - Also water is a normally translucent material, so there will be an extra cost of background pixels.

If my understanding is correct, the link uses a desktop GPU, so running normally on the link has little to do with running it on the device.

I think your plug-in may not compatible for mobile graphics.

I recommend you check the following steps.

1. Check if materials have adequate rendering complexity. Press Alt+8 in the editor, to check the shader complexity of the scene. If your scene is full of green color, it's a green flag for you. otherwise, you need to find an alternative solution for that.

2. Check your plugin are compatible with the mobile renderer.

Unreal documentation covers this topic. or ask plugin developer whether it supporting mobile devices.

3. If the problem (such as black materials) reproduceable in mobile render preview in UE4 Editor, some material node may not supported in OpenGL ES or Vulkan. In this case, you may try change implementation of material, by replacing material node with similar one.

Hope this helps,