Strange Fuzzy Shadows on Moving Character

How can I stop the shadow on this simple moving character from get “fuzzy” like seen in the attached gif? I’d like the shadow to be sharp, like when when the character is at rest.

The scene is lit with a Directional Light and a Sky Light, both of which are set to cast shadows. In the attached gif the character is moving forward by way of a tick-applied force to Character Movement with ground friction set to zero. (See code here.)

I’ve had this same issue in UE4 and UE5.


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Answering my own question: The fuzzy shadow is the result of motion blur.

I was able to tame the blur by using a Post Process Volume (with Infinite Extent) and reducing the Motion Blur amount from 0.5 to 0.1.