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Just upgraded to https://github.com/nicehash/NiceHashMinerLegacy/releases/tag/1.8.1.1
Still just getting 21 but now it is doing duel mode and getting 0.6 on Decred, so earnings up to $1.60 a day butt graphic card Wattage is 148W. Not gonna be making a lot of money, but will use it to heat my room in the Winter :P

The chart in the article shows 25+ Mh/s for an RX 580 with 8 GB. Mine is just 4 GB so maybe that's why my rate is 21? Any tips or advice?

overclock using TRIXX or MSI AFTERBURNER