Directional light Shadow either Hard or No shadow on iOS

Hello everyone!

In the game I am designing, the main camera has a size of 11.. meaning that it is "zoomed out" a little and so when i run on the unity player the shadow gradually decreases in intensity as objects move further away.

however on iOS and WebGL, as the object moves away from the center of the scene, the shadow suddenly gets chopped in half then suddenly goes away.. this gives the game a very stuttery feel.. is there a way to make the directional light ALWAYS give shadow to all objects no matter how far they are?

Thank you for your help! :)