Dear PhoenixMiner,
I can not use -mt option. How to fix it?
Phoenix wrotes: "This works only on Windows and with relatively recent drivers (from the last 6-8 months)"
Your 18.5.1 drivers is too old - allready more than year past...
Thank you very much. So what best driver for rx 570?
I use latest 19.7.3... But I have RX 580 8Gb. For 4Gb cards better driver that uses less memory...
If you have Windows 10 1903 use at least 19.5.1 driver. If not try 19.4.3.
... and what hashrate do you have on 19.7.3? On bc drivers for my RX480 8Gb I've got 31,5 Mh/sec. With Claymore - 32,5 Mh, but more power from the wall.