They can treat the entire enviroment as it were all painted - bake or manually add not just diffuse color but shadows and lighting and whatever, as all the UV layouts for it are unique (speculars are probably dynamic though). Seems they have some character variation system going on as well, different pieces of clothing and…
just so people know: here's what those cvars actually mean so they arent blindingly changing things: All texture data on screen is crammed into a set of images loaded by the video card, these cvars control the size of those images. you need more vram to store larger images, obviously. vt_pageimagesizeunique - this is the…