So you're suggesting we ignore parts of the interview because they don't align with your interpretations?
I'm not sure why you're trying to dismiss this as a "Chinese guy in some livestream" rather than acknowledging that this was an Epic engineer with direct access to the Demo in an official EPIC China livestream and Q&A.
And I have referenced Kim Liberi's comments numerous times in this thread, both back in May and more recently - as have
many others.
Here is how PCGamer describes the conversation.
"I couldn't get any exact specifications from Epic, but on a conference call earlier this week I asked how an RTX 2070 Super would handle the demo, and Epic Games chief technical officer Kim Libreri said that it should be able to get "pretty good" performance. But aside from a fancy GPU, you'll need some fast storage if you want to see the level of detail shown in the demo video."
https://www.pcgamer.com/uk/fast-ssd...-unreal-engine-5-demos-super-detailed-scenes/
This isn't relevant because as you know, unless the tech is in every console, developers can't target it as a baseline, let alone major cross platform middleware developers.
And by far the biggest change to the IO systems in the new consoles is the move from a spinning disk to an NVMe SSD. Yes there are other elements (many of which like hardware decompressors were already in the last gen consoles), but for the most part these are about removing the associated overhead on the CPU of the very fast data transfers enabled by the SSD's. However as long as you're not maxing out the transfer speeds of a multi-GB NVMe SSD then all of this is perfectly feasible on a good CPU - even without Direct Storage.
And at no point has anyone from EPIC ever stated that the UE5 demo maxes out the PS5's or even XSX's sustained data transfer speed. In fact, the Epic China engineer reportedly said the exact opposite.
Sure, reducing IO CPU overhead is a great thing. But no-one's claimed it's a requirement for the UE5 demo provided you have a good CPU.
How could Tim Sweeney say the demo can't run on PC when directly asked? Presumably in exactly the same way that you and Tottentranz are saying it if what you're saying is accurate. i.e. "no it can't run on any PC because it requires an IO system as capable as the PS5's which no PC has". Simple enough if true. But when asked directly, he hasn't said it. Other senior Epic employees however have said the opposite.
We're not talking about the
engine which Sweeney has made quite clear will run on everything from a smart phone upwards, and has also confirmed that all the
technology in the demo will run on PC's.
We're talking about the specific demo itself.
The one specifically demonstrated on the PS5 in a co-ordinated cross promotional event a few weeks before Sony invested $250m in Epic Games. I'm sure I don't need to spell out the potential reasons why Tim
may not be in a position to promote the demo on other platforms.
I'm surprised to hear this argument coming from you. You know as well as I do that the penetration of SSD's in the PC market is nowhere near sufficient to base something as significant as the next iteration of the cross platform Unreal Engine on. No developer in their right mind would design a game engine that requires an SSD as a baseline without the consoles having SSD's. You've argued along similar lines in the past so I know you know this to be true.
Of course the consoles do go beyond just slapping an SSD in there and calling it day. But that in no way equates to this UE5 demo requiring an IO system on par with the PS5's. We've literally been told that already by both the Epic CTO and an Epic engineer. In fact re-reading it, your argument above even seems to be suggesting that it's not only the demo, but the entire UE5 engine that won't run on current PC's because they lack the some of the additional IO elements of the new consoles. And again, we know that to be false because Sweeney has made clear that both Nanite and Lumen will run on PC's: