Hey guys. Wondering if anyone could give me a hand on some issues I'm having.

-I'm on Win7 and I have 2 GTX 970s and I'm getting incredibly low hashrate of about 7MHs per GPU.
-I've tried like 5 different drivers including the 347.52 ones as well the most recent ones.
-I've tried both ethminer and claymore's dual miner on both nanopool and etherminer using both CUDA and OpenCL.
-Disabled SLI (completely froze windows until a disabled that).
-Finally I found out that there's a benchmark mode which I tried and low and behold I got 18-19mhs (which honestly is still quite low for a 1590mhz overclock, at that range i've seen people get 23MHs). But while mining it doesnt break 7mhs.
-Another oddity is only 1 of the cards overclock. Without an OC I'm at 1506mhz (base is 1506 as i flashed a modified bios a few years back to get more voltage) on the cards and with OC im at 1590. Either way only 1 card overcloks and the other stays at 1177mhz.
-Oh and I'm watercooled so temps dont leave the mid 30s celcius.

I've done everything I could find (which there isn't a whole lot of info, especially for my cards). I have had no issues in gaming or anything else. Overclock and everything else is rock solid stable.

Really appreciate any insight anyone can give.

Thank you.