Increasing point light resolution/alternatives

I’m working on a game where the entire scene is lit by a point light. It’s a rather large stage with the point light in the center. Problem is, this results in some terrible shadows. I know point lights use cube maps, and thus six times as much memory, but this is the one really important light in the entire scene. I’ve tried increasing the quality in the player settings and using soft shadows, but neither is enough. Are there any other ways to heighten the shadow resolution? If not, is there a way to achieve a similar effect without using a point light?

43815-skarmavbild-2015-04-03-kl-123218.png

The scene and an example of a shadow.

Try to tweak Shadows Parameters in Quality Settings, especially Shadow Cascades and Shadow Distance.

So is there any solution to increase quality of point light shadows? Or make the gap between the object and shadow be smaller?