itch.io

Also, if it have a child with a rigidbody, but you are moving the child through the parent, make sure to tick the "IsKinematic" in the rigidbody.

You are just moving too fast.

try with: 

public float float speed = 0.1f

FixedUpdate(){

transform.position += Vector3.right * Time.fixedDeltaTime * speed;

}

One week is a very short time for an RTS... ;)