Issues with texture loading

The textures take time to load, they suddenly change shape, as in their shape gets fully loaded. I think it's called texture pop in? It happens all the time. I'm literally 5 inches away from a barricade and suddenly the barricade texture quality changes right in front of my eyes.

What's happening? This wasn't a thing when I played the game (witcher3) on PS4 many years ago.

Vram is only at 50% usage, so it can't be that.

Witcher 3 next gen version, next gen update, ultra+ graphics (75FPS)