Background Speed
Controls the X and Y speed of the background, relative to the camera's movement.
Notes
The background's movement can be calculated using the formulas:
For example, a speed of 1.00 makes the background stationary, while a speed of 0.00 matches the camera's movement.
The background's default X and Y speed are both 0.1, which makes the background move at 90% of the camera's speed.