I submitted N400 application on 11/27 (based on 5 years less 90 days) in Houston, Texas.
On 2/27 I had my interview and I was approved for citizenship. Currently just waiting for the oath ceremony to be scheduled.
I will say that the interview process was very organized and my officer super nice and made the whole process seem like a formality and a quick chat. I've had an I90 case open for 2 years and 2 months now, and the N400 got completed in 3 months.
Good luck to everyone still waiting!