FalconFan93 :
After the latest nvidia driver update (375.86) my graphics cards memory clock is stays at its idle 810MHz. It is killing my FPS... I've tried a clean install... reinstall... It is Samsung GDDR5 BTW I know people are having issues with microns memory right now but this has never happened until now. This is happening to all my games so its not the game engines fault.
I was looking for answers on this same issue, I had just made a fresh OS install so it did not occur to me that it was the new driver until I saw your post.
I uninstalled the drivers and did a clean install from the disk that came with the card "same as your's 1070 extreme amp", driver version 368.39 and everything is working fine, memory clock is doing what it should be, however now I have to wait until nvidia fixes this because I can't play Battlefield 1 in anything lower than 375.xx. thanks and good luck.
EDIT: I did use a DDU before I got the final step mentioned above.