You might as well return your 970 then because for your use case an NVME is not going to be any faster than a drive using AHCI
Lots of tests have shown that for gaming NVME drives have exactly the same loading times as a drive using AHCI because of software limitations and Windows is not much better
Unless you got the drive really cheap it was pointless and you need to work with larger files and workloads before NVME actually becomes faster
I realize this thread is a bit old, but I have to chime here to give my intake on my new 970 Pro, It might or might not help others, but I was wondering about the same thing prior so this could be useful.
First, I've been on windows 7 Pro I still have # of home network systems that will stay on win 7, but my main system I decided to upgrade to windows 10 Pro. I have to admit, I am in some ways impressed I was so opposed to windows 10 when it first came out, but Its been a while and MS have change few things and Pro adds few options that I use so that's were Pro shines for me.
Anyhow, at first I have installed new win10 on my Samsung 860 Pro and after some cleaning and slimming of unnecessary apps and other bloatware I found windows 10 to run nice and smooth but I've always want it to install OS on NVME and my x99 E-WS 10G has M.2 slot, but I didn't want to bother with separate drivers on windows 7 so I left OS on 860.
Now, since I upgraded to Win 10 I thought I should upgrade to NVME as well, but hearing here and there that there is no really difference as far is even booting I was reluctant, but ultimately decided to get 970 Pro anyways.
Here is my experience so far.. my boot time is the same as to expect from workstation board, It loads differently from gaming board, on top of that, there is 16 mechanical drives and 2 860 SSD's so it takes a bit to load, but, and this is not my illusion, it's very noticeable, my system reaction on opening application is much snappier and there is no comparing I can tell the difference right away, also, my browsing and opening websites is freakishly faster very noticeable I don't know why that effected my browsing but overall I am very happy so It was very beneficial in my case.
To ad I use Hyper-V and going from 860 Pro to 970 Pro there is real difference not only loading time, but also responsiveness, It almost feels like on physical machine and as many of you know how VM can get sluggish, so great improvement.