"Send at the best time today" feature

I’m curious for those of you that send regular broadcast emails - do you utilize the “Send at the best time today” feature? How has this impacted your open rates? We’ve been using it for a while, and our opens were pretty good (2am ET), but our “best time” just changed and it’s at a time I don’t really want to send emails (11pm ET). So, just wondering about your experience or how you go about selecting the time you send your broadcasts?