iOS12 is causing an error on Metal Command Buffer execution, render is glitchy or doesn't occur

Question

We have an app that uses Metal to render. This app works correctly on devices running iOS11. When using the same app on devices running iOS12, we started getting gl

Answer 1

I seem to be having the exact same problem. Also using ARKit and the default sceneKit Editor, I kept getting the IOAF code 4 error infinitely when the screen freezes up.

I fixed my problem by changing the environment from "Procedural Sky" to "None". Doesn't lag or freeze anymore, but this is hardly the solution as my AR object now has no lighting or environment. I believe there is a fix coming in iOS 12.2 Beta, but have yet to update.

Hope my solution helps others.