I got a loan of an AVP, and got it working! Same link as before... https://face-flight.com One major "bug" / major development issue for some projects was that the 3D map was getting clipped very close, something that doesn't happen on other WebXR devices like the Quest 3 that I have. It looks like AVP Safari clamps the cameras far to 1000 ( you can successfully set it to less, eg 500, but not more, eg 9999 becomes 1000 ). This took quite a bit of testing to figure out, hopefully this helps a future developer from having to waste that development time. I didn't see any documentation on why this arbitrary value was chosen - it forces developers to scale down worlds to get things to fit ( eg down to 10% ), which of course then means that head and hand moments are now exaggerated like you are a 10x giant. Obviously this is a big issue for anyone wanting to do a flight sim, or view of a city. Hopefully it's a limit that can be discussed ( why 1000 - why not 500 or 5000 ), and potentially removed. Also, I'd like to thank the developers who reached out to me directly and gave me some pointers - I appreciate your time and knowledge!