we are using AD groups for workflows in K2

these don't seem to work straight away, but they do after a day or so.

i have read something about clearing the cache to resolve this quicker.  does anyone know how long it takes for AD changes to be replicated through K2

if i run the following statement, my changes are instant

UPDATE K2].>Identity].>Identity]

SET ExpireOn] = GETDATE()

,>Resolved] = 0

,>ContainersResolved] = 0

,>ContainersExpireOn] = GETDATE()

,>MembersResolved] = 0

,>MembersExpireOn] = GETDATE()

GO