First of all post process and game scripts were on.
secondly as I have said before...
Every thing you listed as reasons that PC can't run the demo. EXISTS in the valley of the ancient Demo. Infact more things exist there than the PS5 demo.
Teleportation, Attack Blast ability, explosion, drone flying mode, boss enemy.
1) Valley has physics
2) Valley needs only 3 GB Ram and 7 GB VRAM (I/O).
3) Valley has destruction,
4) Valley has Sound and music
5) Valley has VFX (the ancient ball is using the same Niagara particle system as the Portal)
6) Valley has different and dynamic lighting
7) Valley has walk, jump, attack, sit, drone flying
8) Valley has explosions which is more expensive
Even going with your warped logic, you still don't make sense.
Not only does the valley have all of this, but its actually more heavy in the valley demo (explosion uses translucency which is expensive).
Almost everything you listed runs on the CPU. The rest runs on the GPU. Which PC is vastly more powerful than the PS5 (chaos, lumen).
and none of it has anything to do with the only two new features in PS5, nanite and lumen.
Nanite is not affected my the destructions. Again you seem not to understand.
All the nanite data was 6.14 GB. Can you reply yes if you understand that?
Its already loaded. They don't load nanite data per frame, its already in the memory.
Chaos physics is a UE4 feature.
Niagara is a 3 years old feature that is very efficient.
The beetles and birds that you say makes the demo not to be able to run on the PC. The holy grail that you exhort is available on the UE4.26 content example for people to toy around with.
You should drag it into the Valley of the Ancient demo, If what you say is true.
Then the demo should crash instantly because it doesn't recognize the PC as a PS5