I’m having this issue too. I’ve reported it elsewere as well.
The game is not crashing so I don’t think there is any Unreal report.
It happened a lot in the demo for me. But in the real game, it only happened in the “The World Ender” zone.
Repeatedly pressing ESC when it freezes can get you out of the freeze (at least it works for me)
Everybody who I have seen post something about this problem (including me) have an AMD CPU.
It looks and sounds like this: https://youtu.be/kUUT1YdNsSA