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Texture2DArray on Mobile

I’m interested in using Texture2DArrays as a replacement for texture atlases for mobile VR (Oculus Quest). I created a prototype in Unity and it works on the Quest, so I know the hardware supports it. But when trying to use a Texture2DArray in a material in Unreal the game works on PC but immediately closes on the Quest with an error. There’s 2 errors, the one that shows up is dependent on the type of texture compression I choose for the array:

PixelBufferObjects error

Specific compression methods error

I also tried Vulkan (though it’s not ideal since I think it’s still experimental on Quest) and got a different error:

BUMP! I need this info.