Solved

[cryptobob88]

Solved.

[Vann]

Your core clocks are too high. I have the same card (OC edition) with the same 1750 strap mod and use 1100 MHz core 2075 MHz memory clock and -96 mV to get ~28.7 MH/s and 720 MH/s DCR dual mining. Anything over that for the core clock results in no hash increase and just makes the card use more power and run hotter. Also check for memory errors using HWinfo. At 2100 MHz I got tons of errors using the strap mod, at 2075 MHz it was stable with no errors.