Free migrations to PvE servers arrive. It is something that without a doubt (at least Tyrande) was crying out for it. If you have a lot of lag, do not hesitate to change servers!
Quote from: Draztal (Source)
Free migrations between the following kingdoms are open until the next May 12:
PvE: Tyrande, Deepmine -> Grizzly Hills
Note: Free migrations can be closed without prior notice.