Hi, JCE. I need some help from you. In my case b4 version seems more stable, however b6 some gpus can give me more hashrate. But some gpu's can't reach max hashrate in b6 and always different. Please help to checkout where my mistake. Thanks a lot.

rx 580 8GBx8(4pcs Gigabyte Aorus, 4pcs Sapphire Nitro+), win10ltsb, adrenalin 18.6.1, virtual memory 90GB
set FORK=12
"gpu_threads_conf" :
[
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 1, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 1, "multi_hash":944 },
    { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 2, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 2, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 3, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 3, "multi_hash":944 },
    { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 4, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 4, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 5, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 5, "multi_hash":944 },
    { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 6, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 6, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 7, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 7, "multi_hash":944 },
    { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 8, "multi_hash":944 },
     { "mode" : "GPU", "worksize" : 8, "alpha" : 64, "beta" : 8, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 8, "multi_hash":944 },
],

ver. 033b4
08:08:14 | Hashrate GPU Thread 0: 560.55 h/s
08:08:14 | Hashrate GPU Thread 1: 560.00 h/s - Total GPU 1: 1120.55 h/s
08:08:14 | Hashrate GPU Thread 2: 565.33 h/s
08:08:14 | Hashrate GPU Thread 3: 565.77 h/s - Total GPU 2: 1131.09 h/s
08:08:14 | Hashrate GPU Thread 4: 553.71 h/s
08:08:14 | Hashrate GPU Thread 5: 549.98 h/s - Total GPU 3: 1103.68 h/s
08:08:14 | Hashrate GPU Thread 6: 580.14 h/s
08:08:14 | Hashrate GPU Thread 7: 578.64 h/s - Total GPU 4: 1158.77 h/s
08:08:14 | Hashrate GPU Thread 8: 561.88 h/s
08:08:14 | Hashrate GPU Thread 9: 564.10 h/s - Total GPU 5: 1125.97 h/s
08:08:14 | Hashrate GPU Thread 10: 555.43 h/s
08:08:14 | Hashrate GPU Thread 11: 555.00 h/s - Total GPU 6: 1110.42 h/s
08:08:14 | Hashrate GPU Thread 12: 574.19 h/s
08:08:14 | Hashrate GPU Thread 13: 574.77 h/s - Total GPU 7: 1148.95 h/s
08:08:14 | Hashrate GPU Thread 14: 568.82 h/s
08:08:14 | Hashrate GPU Thread 15: 567.57 h/s - Total GPU 8: 1136.38 h/s
08:08:14 | Total: 9035.80 h/s - Max: 9060.34 h/s
Max hashrate is reached in ~7 minutes

ver. 033b6
20:13:48 | Hashrate GPU Thread 0: 578.96 h/s
20:13:48 | Hashrate GPU Thread 1: 577.56 h/s - Total GPU 1: 1156.52 h/s
20:13:48 | Hashrate GPU Thread 2: 484.24 h/s
20:13:48 | Hashrate GPU Thread 3: 485.10 h/s - Total GPU 2: 969.33 h/s
20:13:48 | Hashrate GPU Thread 4: 571.78 h/s
20:13:48 | Hashrate GPU Thread 5: 572.38 h/s - Total GPU 3: 1144.15 h/s
20:13:48 | Hashrate GPU Thread 6: 601.14 h/s
20:13:48 | Hashrate GPU Thread 7: 603.49 h/s - Total GPU 4: 1204.63 h/s
20:13:48 | Hashrate GPU Thread 8: 582.62 h/s
20:13:48 | Hashrate GPU Thread 9: 583.82 h/s - Total GPU 5: 1166.43 h/s
20:13:48 | Hashrate GPU Thread 10: 575.81 h/s
20:13:48 | Hashrate GPU Thread 11: 575.35 h/s - Total GPU 6: 1151.15 h/s
20:13:48 | Hashrate GPU Thread 12: 594.01 h/s
20:13:48 | Hashrate GPU Thread 13: 593.27 h/s - Total GPU 7: 1187.28 h/s
20:13:48 | Hashrate GPU Thread 14: 490.98 h/s
20:13:48 | Hashrate GPU Thread 15: 488.96 h/s - Total GPU 8: 979.94 h/s
20:13:48 | Total: 8959.40 h/s - Max: 9159.15 h/s
Max hashrate isn't reached

Now I on version 11.8. Driver now win10-64bit-Radeon-software-adrenalin-edition-18.4.1-apr26. But all this occurs also on older versions of Claymore and drivers
My video cards Gigabyte rx580 Aorus

Hi, I get ETC, sometimes my rig reboots, and Claymor's log comes to an end with the line NULNULNUL... Sometimes one hour, and sometimes works and 30, I can't understand in what the reason. Somebody knows that he means if the ravine comes to an end with NULNULNUL...
https://c.radikal.ru/c32/1806/b3/9f8d39c76573t.jpg