square lighting follows with skylight

Hi all,
Im using a directional light but the shadows are too dark, I then add a skylight but then this square lighting effect follows me. I think this to do with the scale of my game but I cant find a setting to remove this issue. Could someone help ?

it wouldn’t let me upload an image here so its on my dropbox: Dropbox - File Deleted

Best,
Ben.

Let me make a wild guess that it is caused by Light Propagation Volumes. If it is so, and you have it enabled, then add a post processing volume to your scene, and in its settings you can tweak fade values for the square not to be so apparent.