(Maybe you render the model in 3dsmax/maya/and so forth rather than inside your game engine for this.) Also, large textures promise your model are going to be useful for numerous years into the future, as graphics cards enhance and VRAM increases. I've found the threads "make games not engines" that https://gamearab80583.vidublog.com/34213459/new-step-by-step-map-for-game-of-thrones-season-1