anayman_k7 wroteI think you are mistaken, first of all do not use Furmark to stress test, it could damage your hardware because it run a rare scenario that makes the GPU draw a huge amount of power which put a huge stress on the VRM.
As for the result, Furmark is not stressing the memory thats why the frequency is that low, the GPU core usage is 100% so it is running fine, test some games, it will be easy to tell if the video card is giving the gtx1070 peformance or download some benchmark softwares like Heaven or 3DMark
Started writing before the replies were posted :)
I ran overwatch on the second highest setting (ultra, highest setting is called epic, but anyway) you would expect the 1070 to just blast out 100fps+ but I only got 45fps average. Which is mediocre for a 1070.
And I am running it on a 1080p panel, not 4k or anything, so yeah.