Scaling volumetric clouds

is there a way to scale down volumetric clouds? Right now they are kilometers in diameter and i need them to be in meters. I tried different materials but everytime when i mess with texture UVs clouds get crazy noisy and weird. There is always scale parameter but it scales them more localy than globaly.
I can scale eveything in my game up(x1000), but that is creating problems with blurry textures and lightning.