I have exactly same issue. Cannot figure out how to actually export deep from unreal. In vieport, the render time is definitely much longer with deep enabled, but exported EXRs do not contained any deep data nor there is seperate file for this.

We really need it for compositors.

Hi, I tried v44 on both 4.26 and 5EA.
In this version it finally doesnt crash when using UDIMs/Virtual textures, but for some reason Octanes sees all the UDIMs wrong and scatters them all around the objects incorrectly. Any idea why? They are correct in normal viewport.

EDIT: Specifically, from ...