i5/256 Surface Pro 4 overheats and battery drains while 'sleeping'

Thanks for the info. I read in another forum that one rolled back the display driver version to an older date (July) and that the drain rate in that case was back to the 500 mW or roughly 1% per hour. I haven't tried doing that yet.

Additionally, Intel released a beta version of the display driver yesterday. Hopefully something will come along soon for Surface devices.

I finally bit the bullet and contacted Microsoft support via chat.  After extensive troubleshooting, most of what I had already done, the agent finally acknowledged the following towards the end of the chat even though I had specifically asked the question at the beginning of the chat:

ME: Are there reports of this issue in your knowledge base?

Microsoft Agent: Yes we have it in our knowledge base and I would like to assure you that we are aware of it and Microsoft is currently in the process of developing updates that will fix this issue. We are to release new updates that will enhance the performance of the device specifically with the battery.

Me: When is the fix expected?

Microsoft Agent: We don't have specific date yet but I will personally monitor it for you and will send you follow up emails about it. I'm gonna make sure that you'll be one of the first valued customers who will get this update once it's available.

Further, the overheating issue was confirmed to be related:

Me: One more thing -- we didn't discuss the fact that the device gets far hotter than usual, but my research show that is a result of the battery issue we've discussed. Is that true?

Microsoft Agent: Yes that's correct. Since the battery consumption is not normal than before, it affects the fan to run faster and release a heat.

So this is at least a formal, now written acknowledgement of the issue, something that is only hinted at in another thread on the forum by who know.

Too bad about profanity-laced post by another person.  I reported it, but last check it is still in the thread.  That's why this post is a reply to theirs.

Thanks for letting me know that there isn't anyone here worth talking to. I'll move on.

(moderator edit)

Plus I am totally confident that even if you "turned it off" it still runs, because of MS nonsense philosophy to collect data, just like Cortana always runs even you "turned it off". If it's bugged you mostly cant turn it off right now and it still drains in the background, even if it is "turned off" in the menu.

Also, this forum wont get you any help from Microsoft or Intel, this forum is a user-to-user-only community, it has no connection to Microsoft employees. I never got any help over the past years in this community at all but just nonsense answers like update your bios, drivers or reset Windows. Nor will this lead to any bug report tickets. I have battery drain bugs reported since beta last year and they are still not fixed.

Try to report via Microsoft support on the phone (bad idea), or via contact support tool in Windows 10 (mostly also bad idea).

You could also try to ask about this at http://communities.intel.com with log/powercfg statistics pointing out to a Intel driver issue and hope for a miracle.