Simple scene renders with IPR but crashes production

[fixeighted]

As the title sugests, this messes with my evening.
It hangs creating the light cache, needing an end task.
Cpu is fine, though takes forever to render, whereas gpu takes moments.
Scene attached. Thanks.

[fixeighted]

here's the mask it uses.

EDIT: Max23 latest everything else and rec driver.

[hermit.crab]

For some reason, I'm getting an Out-of-core error, even though OOC is inactive. I've got to ask the devs about it.

[fixeighted]

Ok thanks.
I needed the sequence for this morning so had to sit there doing each frame with IPR LOL, so letting it run to x passes, saving, rinse/repeat....rather a painful workaround but got what I needed