Shadow Acne is occurring on movable actors in Blueprint and C++ template projects. The Shadow Acne is present in editor and while launched on to Windows and Mobile.
This was found on separate graphics cards.
Repro:
Expected Result: The lighting behaves normally and does not cause shadow acne on movable objects.
Result: The movable objects have shadow acne cast on them.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-37920 in the post.