there was a similar effect in dishonored 2 with the crystal that let you view multiple timelines, in order to make that level though they had to cut all of their art budgets in 2 in order to maintain their framerates and memory budgets.
Its super cool if it works but the tradeoffs are dire
I'm pretty familiar with this tech mainly due to the fact I've played the aforementioned games and was wondering how they did it. It's impressive from a realism standpoint, but the cost is immense compared to the benefit.