I am running a regression looking at the fertility rate amongst individuals who gained Medicaid cover following the implementation of the ACA Medicaid expansion. I am covering the years 2007-2010. I want to firstly cluster standard errors at state year level and also use state year fixed effects. I am using the ivreg2 command however it is taking a while to carry out my regression. Are there any faster methods of doing this?
Current command: ivereg2 fertyr treatment white married hispanicd migrate i.age i.sy, cluster (state year)

Thank you.