Gizmo_Duck
blathering blatherskite!
The idea resembles the Effect and Cause mission featured in Titanfall 2 where you can switch between time period with the press of a button - the difference with Ratchet is that you're switching between two bespoke maps only one of which will be resident in memory at any time. When you swap between them, only your characters remain in memory - everything else is dumped and the new map data is pulled from the SSD almost instantly. There are no tricks here - it's just that fast. Nothing like this could be achieved on last-gen hardware: it's both a visually striking feature and one that is instrumental to the way Rift Apart plays.
Ratchet and Clank: Rift Apart on PS5 - this is why we need next-gen exclusives