I called it a red flash but it's whenever it flashes into or out of the red images. I think the most recent one was the dream sequence involving Luxe but I can't remember exactly. It's easy enough to look away once the red images are there and I need to swap screens, it's more the flash in I worry about. With that said I haven't seized so far so at least that's a plus
P.S I'm a huge fan of Shadow and really want more