This is a very strange issue, in Windows 10, the 0.6 miner is stable but once you randomly click inside the cmd window, it will just freeze (as in not outputting any new lines), the GPUs clocks are reduced to around 1500MHz (my cards are 1080Tis). I have to close the window and start the miner again. I can reproduce the issue at any time and happens in all of my rigs, so the issue must be not in my system.

Not sure why this is happening, it is not a critical issue but dstm you might want to look at it.