When a Playmaker FSM has too many states it can cause the Editor to slow down and make it unresponsive to edit further.
However, if you just go to the Inspector and 'Copy' the
Play Maker FSM (Script) component then 'Paste Copy As New', the new copy will no longer have this penalty (in my experience).
Then just delete the old copy or mark it for backup and you can reorder the Inspector with the free asset,
Reorder My Components: https://www.assetstore.unity3d.com/en/#!/content/18393I hope this helps someone.
Sid