Thanks for the speedup

2x380 1x290x

with v2
11:15:57:350   13fc   ETH - Total Speed: 66.403 Mh/s, Total Shares: 3, Rejected: 0, Time: 00:02
11:15:57:355   13fc   ETH: GPU0 19.538 Mh/s, GPU1 18.453 Mh/s, GPU2 28.411 Mh/s
11:15:57:361   13fc    DCR - Total Speed: 664.028 Mh/s, Total Shares: 0, Rejected: 0
11:15:57:365   13fc    DCR: GPU0 195.380 Mh/s, GPU1 184.534 Mh/s, GPU2 284.114 Mh/s

with v3
21:58:24:128   21b4   ETH - Total Speed: 68.982 Mh/s, Total Shares: 27, Rejected: 0, Time: 00:35
21:58:24:135   21b4   ETH: GPU0 20.573 Mh/s, GPU1 20.089 Mh/s, GPU2 28.321 Mh/s
21:58:24:139   21b4    DCR - Total Speed: 689.822 Mh/s, Total Shares: 1, Rejected: 0
21:58:24:145   21b4    DCR: GPU0 205.728 Mh/s, GPU1 200.889 Mh/s, GPU2 283.205 Mh/s

both dcri 20