conf 4xR9 270( not X)
--set-work-batch 8
--set-sleep-duration 750
70% cpu usage (new intel gxxxx on h61) , hash rate 16000sol/s ( 3800 - 4200 per card ) , stable 24h
I set work-batch to 6. Now stable for days and 4300sol/s(gigabyte 270 fab oc to 975MHz)
I did have some random problems. Like some cards lose connection to server but another card in same motherboard in that moment have connection, after some time another card same problem.... There was some error message but I forgot to save it. I restart miner and miner was slow in starting up. Restart computer...same problem, restart again everything is ok, so I don`t know what was the problem. Also then miner mine with normal hashrate but there is no found shares.