We just started the process we are a same sex couple. we sent the application in May 23,2016 and we got and email I guess is the NOA 1 on May 27, 2016. Our case was sent to the CSC. I was checking some reviews and from what I see they are processing K1 approvals faster than other USCIS facilities. We are hoping to ends this with the k1 approval in less than 5 months. Good luck to everyone