Having issues too. I have the following:
MSI Z170A
RX580 x 5 cards - was suppose to be 7, but can only do 5 with the AMD drivers (17.4.4)
Kaby Lake processor
two PSU 1200 & 1300 EVGA and HP 94% platinum
Windows 10
claymore 12.4 - basic settings as outlined by claymore.
I have 3 machines that are all having similar problems. After a few hours they freeze up my computer. It is always the same GPU in each machine - GPU 1. It's also the same GPU that gets error 43's. I then disable it in device manager, then re-enable it and it's working correctly again. I have a feeling its the new AMD driver. I can tell it's just not very stable and it hates 5 cards. Does 4 cards okay and won't do 6 cards at all.
Here are two of the logs towards the end when it crashes and freezes up my computer.
Rig 3 --
07:44:42:459 13ec watchdog - thread 18, hb time 719
07:44:42:462 13ec watchdog - thread 19, hb time 516
07:45:12:964 13ec GPU0 t=47C fan=48%, GPU1 t=61C fan=55%, GPU2 t=62C fan=59%, GPU3 t=60C fan=53%, GPU4 t=62C fan=58%
07:45:12:968 13ec em hbt: 0, fm hbt: 31,
07:45:12:971 13ec watchdog - thread 0, hb time 297
07:45:12:975 13ec watchdog - thread 1, hb time 94
07:45:12:978 13ec watchdog - thread 2, hb time 500
07:45:12:982 13ec watchdog - thread 3, hb time 703
07:45:12:985 13ec watchdog - thread 4, hb time 60703
07:45:12:988 13ec WATCHDOG: GPU 1 hangs in OpenCL call, exit
07:45:12:993 13ec watchdog - thread 5, hb time 60312
07:45:12:997 13ec WATCHDOG: GPU 1 hangs in OpenCL call, exit
07:45:13:001 13ec watchdog - thread 6, hb time 60109
07:45:13:004 13ec WATCHDOG: GPU 1 hangs in OpenCL call, exit
07:45:13:007 13ec watchdog - thread 7, hb time 60500
07:45:13:011 13ec WATCHDOG: GPU 1 hangs in OpenCL call, exit
07:45:13:014 13ec watchdog - thread 8, hb time 31
07:45:13:018 13ec watchdog - thread 9, hb time 422
07:45:13:021 13ec watchdog - thread 10, hb time 219
07:45:13:024 13ec watchdog - thread 11, hb time 625
07:45:13:028 13ec watchdog - thread 12, hb time 515
07:45:13:031 13ec watchdog - thread 13, hb time 312
07:45:13:034 13ec watchdog - thread 14, hb time 125
07:45:13:037 13ec watchdog - thread 15, hb time 719
07:45:13:041 13ec watchdog - thread 16, hb time 375
07:45:13:044 13ec watchdog - thread 17, hb time 156
07:45:13:047 13ec watchdog - thread 18, hb time -31
07:45:13:051 13ec watchdog - thread 19, hb time 578
07:45:14:594 13ec Restarting OK, exit...
rig4 --
15:08:19:058 1a88 got 41 bytes
15:08:19:061 1a88 buf: {"error": null, "id": 4, "result": true}
15:08:19:064 1a88 parse packet: 35
15:08:19:067 1a88 ZEC: Share accepted (31 ms)!
15:08:19:071 1a88 new buf size: 0
15:08:34:392 1f44 GPU0 t=49C fan=82%, GPU1 t=62C fan=82%, GPU2 t=65C fan=82%, GPU3 t=64C fan=82%, GPU4 t=64C fan=82%
15:08:34:397 1f44 em hbt: 0, fm hbt: 62,
15:08:34:401 1f44 watchdog - thread 0, hb time 578
15:08:34:404 1f44 watchdog - thread 1, hb time 437
15:08:34:408 1f44 watchdog - thread 2, hb time 141
15:08:34:411 1f44 watchdog - thread 3, hb time 297
15:08:34:415 1f44 watchdog - thread 4, hb time 73437
15:08:34:418 1f44 WATCHDOG: GPU 1 hangs in OpenCL call, exit
15:08:34:422 1f44 watchdog - thread 5, hb time 73594
15:08:34:425 1f44 WATCHDOG: GPU 1 hangs in OpenCL call, exit
15:08:34:428 1f44 watchdog - thread 6, hb time 73281
15:08:34:431 1f44 WATCHDOG: GPU 1 hangs in OpenCL call, exit
15:08:34:435 1f44 watchdog - thread 7, hb time 73750
15:08:34:439 1f44 WATCHDOG: GPU 1 hangs in OpenCL call, exit
15:08:34:442 1f44 watchdog - thread 8, hb time -47
15:08:34:445 1f44 watchdog - thread 9, hb time 266
15:08:34:449 1f44 watchdog - thread 10, hb time 109
15:08:34:452 1f44 watchdog - thread 11, hb time 406
15:08:34:455 1f44 watchdog - thread 12, hb time 156
15:08:34:458 1f44 watchdog - thread 13, hb time 312
15:08:34:461 1f44 watchdog - thread 14, hb time 0
15:08:34:464 1f44 watchdog - thread 15, hb time 453
15:08:34:466 1f44 watchdog - thread 16, hb time 219
15:08:34:469 1f44 watchdog - thread 17, hb time 359
15:08:34:472 1f44 watchdog - thread 18, hb time 516
15:08:34:475 1f44 watchdog - thread 19, hb time 62
15:08:36:019 1f44 Restarting OK, exit...
15:28:23:641 c18 GPU0 t=54C fan=81%, GPU1 t=67C fan=78%, GPU2 t=61C fan=83%, GPU3 t=62C fan=82%, GPU4 t=66C fan=82%
15:28:23:644 c18 em hbt: 0, fm hbt: 47,
15:28:23:647 c18 watchdog - thread 0, hb time 16
15:28:23:650 c18 watchdog - thread 1, hb time 94
15:28:23:653 c18 watchdog - thread 2, hb time 141
15:28:23:656 c18 watchdog - thread 3, hb time 62
15:28:23:659 c18 watchdog - thread 4, hb time 30422
15:28:23:662 c18 watchdog - thread 5, hb time 30469
15:28:23:665 c18 watchdog - thread 6, hb time 30375
15:28:23:668 c18 watchdog - thread 7, hb time 30312
15:28:23:672 c18 watchdog - thread 8, hb time 109
15:28:23:675 c18 watchdog - thread 9, hb time 16
15:28:23:678 c18 watchdog - thread 10, hb time 62
15:28:23:681 c18 watchdog - thread 11, hb time -31
15:28:23:684 c18 watchdog - thread 12, hb time 109
15:28:23:687 c18 watchdog - thread 13, hb time 62
15:28:23:690 c18 watchdog - thread 14, hb time -31
15:28:23:693 c18 watchdog - thread 15, hb time 16
15:28:23:696 c18 watchdog - thread 16, hb time 16
15:28:23:699 c18 watchdog - thread 17, hb time 62
15:28:23:702 c18 watchdog - thread 18, hb time 109
15:28:23:705 c18 watchdog - thread 19, hb time -16
15:28:39:676 424 ZEC: put share nonce 190da
15:28:39:687 424 ZEC round found 1 shares
15:28:39:699 137c ZEC: 05/02/17-15:28:39 - SHARE FOUND - (GPU 4)
15:28:39:707 137c send share: {"id": 4, "method": "mining.submit", "params": ["zcash address.rig4","1705023ab","93070959","da900100000000000000000000000000","fd4005008b8b9ad58e64ef15c13166240ba64fa8fa9e5dce00
15:28:39:740 137c got 41 bytes
15:28:39:744 137c buf: {"error": null, "id": 4, "result": true}
15:28:39:747 137c parse packet: 35
15:28:39:751 137c ZEC: Share accepted (46 ms)!
15:28:39:756 137c new buf size: 0
15:28:41:247 cd0 ZEC: put share nonce 19470
15:28:41:260 cd0 ZEC round found 1 shares
15:28:41:271 137c ZEC: 05/02/17-15:28:41 - SHARE FOUND - (GPU 2)
15:28:41:278 137c send share: {"id": 4, "method": "mining.submit", "params": ["zcashaddress.rig4","1705023ab","93070959","70940100000000000000000000000000","fd4005006463e6a8436c2a7d1021c10bfecb7762357bbafe1c
15:28:41:307 137c got 41 bytes
15:28:41:311 137c buf: {"error": null, "id": 4, "result": true}
15:28:41:315 137c parse packet: 35
15:28:41:319 137c ZEC: Share accepted (31 ms)!
15:28:41:324 137c new buf size: 0
Anyone have any good advice? Or same conclusion I came to? I also tried -old 1 and pretty much all the intensity levels.
Thanks in advance!