I said this a long long time ago when the SSD magic was all in the air. I remember it "when you stream in data into view and you are rendering the asset - the GPU becomes the bottleneck". I got shit for it from non-developers. We've come full circle.
Thing is though - even if this demo is running quite good on PC it has no authority over the general I/O Advancements in PS5 or Xbox Series ..
Take the best possible Example here:
New soon to be released Ratchet and Clank Rift Apart does things currently not possible on PC.
The unload everything what is not in view from ram and let the entire ram be used for Stuff the player sees in that moment is only possible with the sophisticated I/O we find in PS5 for the moment.
Theoretically it would be possible on a PC with lots of ram by just having all assets and textures be uncompressed.
But you would have install sizes of 1TB per Game.
And how good this demo is running even on Hdds makes be extremely suspicious about this demo .. it must be a somehow dumbed down version of the one from one year ago...
Or at least about its implications on Console I/O capabilities...
Its is not all smoke and mirrors you know..
Sony and cerny did spend quite the money to develope this system.
And their solution got praise industry wide.. it's not only Fanboys .
I say we wait a couple of days maybe epic explains abit more about this particular demo...