Issue:
Miner v1.1, 6xPowerColor Red Devil RX480 8GB, Catalyst 16.11.1, Win 10.
Start Mining, about 2 minutes and restart PC (BSOD or any Problem - I don't know). Last 2 lines of log:
23:12:57:379    121c    ZEC: Share accepted (109 ms)!
23:12:57:395    121c    new buf size: 0
At Miner 1.0 Rig work's without problems.

3 rig's with Sapphire RX470 8GB work 1 hour so far.