New macOS 10.12.3 update implements MacBook Pro GPU fix, rectifies Safari battery drain
In conjunction with iOS, tvOS, and watchOS updates, Apple has also released the 10.12.3 update to macOS Sierra, bringing GPU driver updates to the 2016 MacBook Pro, and a fix for PDF corruption.

Apple's release notes specify that the 10.12.3 update improves automatic graphics switching on the 2016 MacBook Pro 15-inch model, as well as resolves issues while encoding Adobe Premiere Pro project on the same model, plus the 13-inch MacBook Pro with Touch Bar.
Apple also claims that the update "improves the stability, compatibility, and security of your Mac." Display brightness has been added as a potential energy impact warning item,, and Apple has also rectified some issues surrounding the MacBook Pro's battery drain in Safari, as accidentally discovered by Consumer Reports during the course of their testing.
The update weighs in at 1.05 GB for a 2016 MacBook Pro, and is available through the Mac App Store.

Apple's release notes specify that the 10.12.3 update improves automatic graphics switching on the 2016 MacBook Pro 15-inch model, as well as resolves issues while encoding Adobe Premiere Pro project on the same model, plus the 13-inch MacBook Pro with Touch Bar.
Apple also claims that the update "improves the stability, compatibility, and security of your Mac." Display brightness has been added as a potential energy impact warning item,, and Apple has also rectified some issues surrounding the MacBook Pro's battery drain in Safari, as accidentally discovered by Consumer Reports during the course of their testing.
The update weighs in at 1.05 GB for a 2016 MacBook Pro, and is available through the Mac App Store.
Comments
According to a previous Apple statement, it was an issue with extremely excessive reloads of favicons when the cache was disabled. No end user would ever hit it.
Been stuck there for 25 min now, not sure how to force it out of this
without bricking my mac! Eek
macbookpro late 2016
And thanks for letting me know the problem still exists for 10.12.3. I think we are stuck in time with 10.12.1. Fairly, my iMac is a late 27" iMac that works just fine...on 10.12.1....and I suspect 10.13 will not support. I think I've reached end-of-life. Your new MBP is a different situation though.
In the 2016 15" touch bar laptop running the beta before this one, I was only getting 2.45 hours EVER. That includes running it till it literally stopped working. Not by choice - there was no electrical at Walgreens waiting room to plug it in so it literally just turned off.
On January 8th after 3 weeks of never achieving 3 hours, let alone the yet to be seen "10 hours" - they finally took mine back and overnighted a brand new one directly from China. I've been on it since January 12th and still just 2.45 hours running only those two programs.
Yes tge screen is dimmed to 12 clicks
Yes wifi is turned off
Yes Bluetooth is turned off
Yes the keyboard is turned off
Yes I've set setting to run lower processor
in fact if you think of any others yes I did those too!
We're not sure what to do now. 2.45 hours?? That's not even a flight from Phoenix to Houston to prepare for a show! I've never bought into the whole "class action law suit" thong before, but I swear if they don't change their specs from 10 hours to state "maybe 4 hours if you don't open anything", then I'm onboard on this one. $3800 and not ever 3 hours? My 2011 laptop lasts 45 minutes longer using just the same two programs. They can't state things that can't physically achieved. If this was Microsoft, Google or Leveno we'd be blogging the hell out of this outrageous lie, but because it's apple and I've been with them since 1984 (so don't start with the troll shit) were supposed to just accept it and go quietly into the night?
And before someone points out "no one made you buy it" well dude they kind of did because I've been using my 2011 17" to death and next year it will be on the not supported list so yeah... I kinda had to. I remember when you bought apple and "it just worked" those days are a distant memory these days.
The app that you're using is seemingly using a lot of CPU or GPU and that's draining the battery. Did you check the manufacturer's website or do they have forums you can ask for advice?
Stuck on the black screen spinning wheel for an hour 45 now. This is not looking good.
macbook pro late 2016 with touchbar
UPDATE: Got on chat with AppleCare. They had me force shutdown, restart, it cycled through the Apple Logo startup 3 times and then it was fine. Update had been installed. It was stuck in the shutdown after installation but otherwise nothing wrong.