Just turn the spray rate up a bit. The lowest spray setting is actuall a kind of 'subtract' mode (intentional) that wipes the layers back to layer 1.
The auto-smooth thing is just the way it works. It removes severe angle differences by averaging the landscapes and makes them, well, more smooth :)
The auto-smooth thing is just the way it works. It removes severe angle differences by averaging the landscapes and makes them, well, more smooth :)