My month-old question on changes in RealityKit don't have any response. Apple wants this new tech pushed but is not bothering to answer even the most basic support questions. It's frustrating to say the least. If we are relying on under-the-hood code, it needs to work and stay working.

There seems to be another major change to photogrammetry session. The OBJ format is no longer supported as an output, only USDZ. What is going on with this code? It's gone from being very useful to not useful at all.

Yes, that is how I am capturing the images. I think I figured out my issue. I am taking photos under water and I believe the depth data is off somewhat due to the refractive differences of water vs air. I assume that in Portrait Mode two lenses are used to compute a depth map, and the math is a little off for underwater use.