Gosh darn I figured so. Well it's been a couple hours and I dropped a few settings around to get a lower hash but I'll try to figure something out. 28mhs on 2300mhz mem clock 950 mv, 1090mhz clock 950mv.
I've seen settings like mine that was getting 32mhs. I am running from my gaming PC and was wondering if my setup was the reason I'm not fully optimized?
Core at 1150MHz and 850mV if you can.
Try to lower you memory voltage to 900mV.
Core voltage of 850mv doesn't do anything if you have mem voltage at 900mv. That just means you will run core at 900mv.
To OP - 2300mhz mem is super high, and it's probably going to be hard undervolting significantly at that frequency. With <=1300mhz core and <=2200mhz mem (could be lower depending on timing straps), you should be able to get to <850mv. I have a nitro 590 (w/ micron mem & timing straps updated in bios) running at 1280 cclock, 2200 mclock, 837mv for 32.7MH/s. Windows 10, early 19.x driver. Samsung should be able to do similar (tho not w/ one-click PBE 'ubermix' straps), hynix probably 1-2MH/s less.