Android Shadows Degrade over time

Hi, I’m having trouble with shadows on my android. The last time I made a build was more than 8 months ago, and before then I didn’t have a shadow problem.
This is what happens. It starts up looking nice and sharp, and with time the shadows degrade and I get weird unwanted shadows on the ground and cube. I’ve tried messing around a bit with the lighting settings but I have no idea what is going on.

Thank you very much,

Here are the two pictures:


I solved the problem by adjusting the Graphics setting and setting “Cascaded Shadows” on for all tiers!