Detailed terrain textures not showing up?

So, I made a terrain and applied a 512x512 texture as the base texture, proceeding to paint with other 512x512 textures. The problem is that only the very low-res versions of the textures seem to be showing up. From what I’ve read there’s two versions of the textures, “Base textures” and “Control textures”, the control textures are the higher res versions that are supposed to be showing at closer distances and the base textures are the ones that are seen at high distances. So, I only get the blurry textures that are supposed to be seen at a distance. Why?

Anyone? :frowning: