Mine in fulton county took about 90 days. My sister in henry co was 1 week.
Unless there was a problem on your background check or a mistake on some line in your application, there's no way it should have taken 90 days. If it did, some nincompoops in the Probate Judge's office were not doing their jobs correctly. The law has relatively short deadlines for government officials to follow at each step in the processing of your application, and they add up to a total of about 45 days, if each step takes the maximum allowed time.