Delay for updating user-specific stats

[ShatalovYaroslav]

For the endpoint /scheduler/stats/myaccount/ returns a stats related to the user's account. The stats returned from server are not updated for about 2 minutes. The stats updating time should be decreased as it brings misleading for the portal stats displaying.

From the other endpoint: /scheduler/stats/ It returns statistics about the scheduler (for all accounts). The stats are updated almost without any delay.