@uexilon We can understand very well, as we are also extremely frustrated with Unreal Engine for AR. Furthermore ARkit on iOS is also not without breaking problems.
Epic remains silent, no fixes, no roadmap. There are community managers, evangelists, and what not, but no communication at all.
One has to get a custom license for 1500USD only to communicate with anyone at Epic via Unreal Developer Network (UDN).
But if they would then actually fix this mess (and if so – when?), is another question. It’s a 1500USD gamble with no guarantee that anything will become usable.