2 kerney666

Hi, my rig can't run longer then 1-2 hours on v 0.4.5 and newer. One GPU hangs (this is from 0.5.1 after autoconfig):

[2019-06-10 21:22:55] GPU 0 [57C, fan 87%] cnr: 2.486kh/s, avg 2.477kh/s, pool 2.709kh/s a:46 r:0 hw:0
[2019-06-10 21:22:55] GPU 1 [58C, fan 85%] cnr: 2.490kh/s, avg 2.482kh/s, pool 1.261kh/s a:22 r:0 hw:0
[2019-06-10 21:22:55] GPU 2 [56C, fan 86%] cnr: 2.486kh/s, avg 2.478kh/s, pool 2.969kh/s a:51 r:0 hw:1
[2019-06-10 21:22:55] GPU 3 [63C, fan 87%] cnr: 2.480kh/s, avg 2.468kh/s, pool 2.377kh/s a:42 r:0 hw:0
[2019-06-10 21:22:55] GPU 4 [45C, fan 90%] cnr: 2.483kh/s, avg 2.471kh/s, pool 2.737kh/s a:47 r:0 hw:3
[2019-06-10 21:22:55] Total                cnr: 12.42kh/s, avg 12.38kh/s, pool 12.05kh/s a:208 r:0 hw:4
[2019-06-10 21:23:05] GPU 4: detected DEAD (11:00.0), will execute restart script watchdog.sh

but v0.4.4 with exactly same config can run for weeks:

[2019-06-10 19:40:27] Stats Uptime: 13 days, 12:58:15
[2019-06-10 19:40:27] GPU 0 [59C, fan 87%] cnr: 2.471kh/s, avg 2.470kh/s, pool 2.340kh/s a:7780 r:0 hw:17
[2019-06-10 19:40:27] GPU 1 [60C, fan 85%] cnr: 2.474kh/s, avg 2.473kh/s, pool 2.423kh/s a:8057 r:0 hw:39
[2019-06-10 19:40:27] GPU 2 [57C, fan 86%] cnr: 2.471kh/s, avg 2.471kh/s, pool 2.337kh/s a:7768 r:0 hw:106
[2019-06-10 19:40:27] GPU 3 [63C, fan 87%] cnr: 2.464kh/s, avg 2.464kh/s, pool 2.381kh/s a:7917 r:0 hw:73
[2019-06-10 19:40:27] GPU 4 [55C, fan 88%] cnr: 2.470kh/s, avg 2.468kh/s, pool 2.259kh/s a:7519 r:0 hw:321
[2019-06-10 19:40:27] Total                cnr: 12.35kh/s, avg 12.35kh/s, pool 11.74kh/s a:39041 r:0 hw:556
[2019-06-10 19:40:39] Pool pool.supportxmr.com received new job. (job_id: +kOSIEF95a5dlkxX6slHR0EW+l34)

I know, I'm pushing hard on limit, but what changed in TR miner 0.4.5 that causes this instability?  With 0.4.4 and older was this rig rock stable. OS is Linux & amd18.3 drivers.

Thank you for answer,

Migo