Why does my PS5 time have to load all the textures again and again?

I see all the ps5 gameplaycontent here on reddit and all the textures look near perfectly. Buildings, mountains especially.

So when I start in New York, although Ive been there many times before, all buildings look like crap, even I flew over with a slow cessna. After endless minutes Manhattan is fully loaded. Then I switch to lovely Grand Canyon - all textures gone. Turning off PS5 and starting next day in NYC? All textures gone.
Is it just me?

I know, for ps5 there is no way to download textures permanently unlike on PC. Maybe the contentcreators flew over and over again those terrain they want to show, before they hit the record button...

Sidenotes: Base PS5, more than enough free SSD Space, about 235mbits measured with ps5 speedtest.