I don't remember exactly what smart actions I used from the recommendations. I used two. One was related to when power is below 25%, and the other was related to changing ring tone at night.
After the phone rebooted, I disabled both smart actions and shut everything I could down related to smart actions (such as "Suggestion notifications"). Battery life appears to be back to normal. I am not using any smart actions. I think they are a good idea, but have not tried again.