Dreamstorm quests can now only be accepted and completed once per day:
Once a Dreamstorm quest has been successfully completed and the rewards collected, no further Dreamstorm quest can be accepted on the same day (this is reset daily during the small hours).
If the Dreamstorm defense was unsuccessful, or no reward was collected because too few enemies were killed, then the quest can be accepted again at the next Dreamstorm. There will be no more gold rewards for failed Dreamstorms.
Performance improvements within Dreamstorms.