15:08:03:552   ebc   Share accepted (47 ms)!
15:08:03:554   ebc   new buf size: 0
15:08:03:811   ebc   got 253 bytes
15:08:03:812   ebc   buf: {"jsonrpc":"2.0","method":"job","params":{"blob":"0305b18ab9c305bd445849f96d802717976bad3a8b963a375708165dd14e7ba72c265651e2d1fa0 00000009cd03fa3310789f936b610b107779382ae28cc6878446bf1d91027f8fae2bcda17","job_id":"737135642999783","target":"b88d0600"}}

15:08:03:813   ebc   parse packet: 253
15:08:03:814   ebc   new buf size: 0
15:08:03:817   ebc   01/05/17-15:08:03 - New job received from xmr-eu.dwarfpool.com:8005
15:08:03:819   ebc   Speed: 680 h/s, Total Shares: 705, Rejected: 0, Mining time:
15:08:03:821   ebc   03:45
15:08:03:823   ebc   TotalHashes: 6597K, DevHashes: 163K, DevFee rate is 1:39
15:08:04:252   b2c   Job changed, drop current round
15:08:04:254   b2c   Round
15:08:04:255   4dc   Round
15:08:05:088   ebc   got 78 bytes
15:08:05:089   ebc   buf: {"jsonrpc":"2.0","method":"job","params":{"blob":"","job_id":"","target":""}}

15:08:05:090   ebc   parse packet: 78
15:08:05:092   ebc   cannot convert blob data
15:08:05:094   ebc   new buf size: 0
15:08:05:802   b2c   GPU 0: HashCnt = 1024, time = 1503 ms, hashrate = 681 h/s
15:08:05:818   b2c   Round
15:08:07:340   4dc   GPU 0: HashCnt = 1024, time = 1502 ms, hashrate = 681 h/s
15:08:07:355   4dc   Dev round
15:08:08:879   b2c   GPU 0: HashCnt = 1024, time = 1501 ms, hashrate = 682 h/s
15:08:08:895   b2c   Round
15:08:10:418   4dc   GPU 0: HashCnt = 1024, time = 1502 ms, hashrate = 681 h/s
15:08:10:434   4dc   dev round found 1 shares
15:08:10:435   f84   DevFee: 01/05/17-15:08:10 - SHARE FOUND (target 2000) - (GPU 0 of 1)

what is this error about?

@Claymore, another question, using tuning usually gets my ip banned, first of all, gpu is not overclocked, however, hashrates shown differs on multiples same gpu model, for example, rx 480 8gb, card 1, shows 690 h/s, rx 480 8gb, card 2, shows 660 h/s, the only way for card 2 to reach card speeds is to tune -h values, up and down -h 1024 to -h 992 and back to -h 1024, is there a way you can make highest values stable, i mean, all gpus reach highest possible hashrate?