My biggest concern is why you're only getting 50% hashrate for WPA2 2500. My 1070 easily gets 350K which is double your rate per card. Otherwise, judging by the images your hashrate is still being produced so its most likely just an issue gathering the cards usage info and just drawing it as 0%
On a side note, your RAM should be upgraded as it could be a potential issue. You're Motherboards RAM should match that of the total VRAM of your Video cards. So if you're running 6 1070's with 8GB VRAM you should have 48GB RAM on the MOBO.
On a side note, your RAM should be upgraded as it could be a potential issue. You're Motherboards RAM should match that of the total VRAM of your Video cards. So if you're running 6 1070's with 8GB VRAM you should have 48GB RAM on the MOBO.