It works better then 0.20. On 290x I have 7400sol/s and on 270 I have 4300sol/s thanks to change in work size. On 0.20 it was 6600/3700sol/s for 290x/270. still this is low compared to optiminer where 280x can do 7300sols. Please work a little bit more on AMD cards. Thank a lot !!!!! This is for me only option because I have some issue with linux (ubuntu and amdgpu-pro)