Unreal Engine 4 - Fix cartoonish shadow and soften the shadow

 This is how I can fix cartoonish shadows and how I can make the shadow softer and more realistic.

Fix Cartoonish Shadow on Landscape

Before I show you how to fix cartoonish shadow, let's demonstrate how cartoonish shadow looks:

Okay, to fix this issue, simply click on the landscape to bring up the details panel

then scroll down until you found Static Lighting Resolution and bring it up from 1 to a higher value like 4.8.16.32 and so on.

Remember the higher the value, the bigger level build data size and it will impact game performance and size. Also, it will reduce the build duration. Bringing more than 1 and below 16 should be perfect. 

https://forums.unrealengine.com/t/how-do-i-fix-bad-shadowing-on-the-landscape-cast-by-small-objects/437825/2

More realistic shadow and softer shadow.

Before

After

To fix this kinda ugly shadow, try using sky light component. If you have it already and feels it still too dark, you can increase the intensity scale to above 1. 

To achieve a better result tho, try playing on Directional Light, Exponential height fog, Volumetric fog, Rim light, spot light and point light. Adjust those settings to achieve more realistic looking shadow, lighting and color. 

https://www.youtube.com/watch?v=ju-3feln9Rs

https://forums.unrealengine.com/t/why-are-shadows-in-unreal-engine-so-dark/56039/7