what are the appropriate video card settings R9 270X 2GB?
{ "id" : 0, "intensity" : 56, "worksize" : 8, "threads" : 1}   - thus gives an error

{ "id" : 0, "intensity" : 2, "worksize" : 8, "threads" : 1} - error

{ "id" : 0, "intensity" : 24, "worksize" : 4, "threads" : 1}  - low speed 270 hs

{ "id" : 0, "intensity" : 48, "worksize" : 4, "threads" : 1} - low speed 360 hs

{ "id" : 0, "intensity" : 60, "worksize" : 4, "threads" : 1} - error

I'm looking for about 450