So what bothers me is that the new Rachet game still has these transitional in between scenes to mask the loading... in know it's early days, you can tell from the stutter from switching between those dimensions, but so much for that advantage.
Apparently 4.5 GB/s is still not fast enough ... "normal" SSDs (i.e. your PCi3 NVMe with 2 - 2.5 GB/s bandwidth) will just take 1 - 2 seconds longer so what was the point. A "normal" NVMe SSD with more storage space would've done the job. The difference between 1TB vs 825GB (god knows how much of it is actually usable) doesn't sound much but it could be at least one more average sized game installed. And let's not forget - the install speed will be dependent on the disc drive- or your internet speed. While I really, REALLY appreciate everything that is not off the shelf, and manufacturer really trying to push the envelop but it also has to be worth it. I know it's just one game and still in development - but it was obviously also kinda a tech demo to demonstrate the advantages and I can't really see them.
Another thing is when scripted/with prediction you can do this even on today's hardware, see Portal series, Bioshock Infinite, Titanfall 2 and more. Scratch that - there are PS1, Dreamcast, PS2 games that did that - obviously not with that scale but those consoles read from a bloody slow arse disc drive.