I'm tempted to vote for "shoes too loose" They really should make you "nervous" about the size being too small when you WALK in them.
Additionally they come with the smallest (least) footbeds. Perhaps you are a candidate for BLUE footbeds rather than the red or black stock ones.

Another issue we sometimes see is too much or too little last curve to match the foot. General rule is pain on the outside...get a straighter last shoe. Px on the inside get more last curve.