You can rapidly charge with a QC charger. I haven't gotten 3a output yet, will hopefully have more information soon.
Could you please compare it on a QC2 charger and see how fast it charges compared to the normal rapid charging?
Also, in your slow motion video focus was missed (it focused behind the subject). Is there any chance you could retake it with the subject in focus? if you took it with a more well lit foreground, as opposed to a bright background, and from a slightly angle, i suspect you'd have better luck with the focus.
Thanks for all the info. I can't wait for the phone.