https://ph.usembassy.gov/u-s-embassy-to-launch-new-visa-application-center-additional-consular-information-services/
There's another application center opening in the metropolitan Manila area (Parañaque) at the end of the month. It seems like it's to help with processing and will change the way things work prior to the interviews. It sounds like you'll have to do stuff at this location prior to the interview for document related items. Not sure if this will speed things up or slow them down.