hmm, actually not getting many accepted shares at all. pulling 24Mh/s and nothing.. weird
any tips?

{
"pools" : [
{
      "url" : "stratum+tcp://ath.nicemining.pw:3435",
      "user" : "yuriy128.home",
      "pass" : "x"
   }
],
"device" : "0,1",
"intensity" : "13,20",
"failover-only" : true,
"scrypt" : true,
"worksize" : "256,256",
"thread-concurrency" : "10240,28544",
"shaders" : "2048,2560",
"gpu-engine" : "1060,947",
"gpu-memclock" : "1500,1250",
"gpu-threads" : "2",
"kernel" : "groestlcoin"
}