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All subsequent sleeps have been good using less than 0.2% per hour, and I think it's more aggressively keeping the CPU clockspeed low. This is good!

A quick thing that I noticed last night when I had my SP4 in tablet mode (something that I rarely use): my device was idling at ~1 GHz according to task manager. At first, I thought maybe this was due to the new firmware messing up my device BUT it turns out that Task Manager expanded to a full...

Those two are supposed to do that occasionally, the first to scan for viruses and the second to make sure that updates are installed.

In the Pens menu at the top, click "Stop Inking"

I'm actually having the reverse happen: previously, sleep was mostly fine but, on the first sleep I put it into, it burned 25% of my battery in just under an hour which is the worst sleep drain I have ever experienced.

Seems to work fine for me so far on Core i5, 8 GB, 256 GB. Idle clockspeed was pretty high for the first hour or so after updating but now it has settled back down to < 1 GHz with just iTunes and Chrome running. It'll be interesting to see if this will affect the already pretty good battery life...

That's interesting. I can understand a new device being constantly active because it's indexing and possibly updating (when on wifi) constantly. In fact, what's the longest period of time that you've had the SP4 without refreshing/reformatting?

It really sounds like you want something that's easier to use as a tablet, especially on the go. The Surface Book is really more of a laptop that can be occasionally used as a tablet while the Surface Pro is more of a balance between laptop and tablet. The Type Cover is also a lot smaller and...

I just formed another hypothesis about what's cutting some people's battery lives short: did you guys disable sharing Windows updates to other people over the internet? I did since I don't want to waste bandwidth and power hosting Microsoft's files. Perhaps give this a try!

Going through your images, I couldn't spot anything in particular that I think would do this but I have a couple of ideas. The first is whether you are using some kind of power management program that's screwing up how far the CPU can downclock (I noticed that you had BatteryBar installed which...

Do you happen to have a temperature graph for the entire session? Oh and also a graph of the multipliers over time, ie. whether it's a huge drop early on or whether it takes a long time for it to drop down to those final multipliers that you state.

Some people have problems with sleep where it seems to drain ~5-8% battery per hour so I have intentionally left mine in sleep mode. You'll see in the following picture that I put it to sleep (connected standby) at 20:25 on the 14th at 76% battery. After 2 hours, it went into suspend (hibernate)...

It sounds like it could be one of a number of things: 1) Your hardware is faulty, 2) you have installed some programs that interfere with the proper running and battery management of your device, and 3) something weird happened during the update process and has screwed up your Windows install...

For your and other's reference, this is what my Surface Pro 4 activity looks like at idle. Video: As you can see, my CPU usage stays around 1-4% and clock speed stays in the 0.6-0.7 GHz range most of the time. Might be a good idea to eventually reset but, before you do that, you can try...

Adobe Premiere might be BSOD'ing due to the shoddy Intel graphics drivers but I'm not certain on that. I guess I could download the demo and see how that runs. Is there any particular thing that I can test that will reproducibly cause a BSOD or is it seemingly random? Off the top of my head...

These are not universal Windows 10 issues because I do not suffer them. Either you guys are installing software that cuts your battery life and causes BSODs or you guys are really unlucky with hardware.

Had a Dungeons & Dragons game today where I was viewing and editing pdfs using Drawboard PDF (character sheet, spell list, Player's Handbook), had Excel open for an initiative list, and was browsing pages using Chrome. My Surface was on battery from 2:04 pm to 9:39 pm with about 2 hours of...

Sounds like a lot of extra stuff to carry around but, if you can use the extra battery and projector, then it's definitely a valid choice.

Just tried brightness set to 0%, no flicker or other screen oddities over the past couple of minutes, so, unless it doesn't actually flicker that often, you all probably have hardware issues.

It sounds like your SSD died or somehow got corrupted. Make a Win10 install USB from the Media Creation Tool and, once you boot to the install program, "delete" the current partitions on the SSD and make new ones. If it can't find the SSD, well, you have your answer then.