We were placed on AP after interview due to required joint sponsor.
It took me 7 weeks to find a proper joint sponsor and sending the documents overseas to the approved document delivery service and in the meantime, I emailed the embassy once to ask about a certain type of joint sponsor. They replied within 2 days and with the exact information I needed. Once the paperwork reached the embassy from my end, it took literally 3 days for them to update status to "issued"