Try any other pool on this rig, if issue goes away - flush DNS cache of your problematic rig, you can do it with ipconfig /flushdns command from CMD with administrative privileges, then restart.
If not, try starting miner with limited number of devices running, -d 0,1,2 , etc. Until you find exact device causing problem.
If it'll still be there, try reinstalling videodriver.

Check your pool settings, seems you're not signed up/authorized on the pool side.

At the first view, two possible problems visible:

1) High (for this miner!!!) overclocking settings, try lowering your clocks.
2) Faulty driver installation (what version do you use, CUDA 9.1 or 9.2?), try clean install of the newest one.

If hashrate drops to 0 and system doesn't freeze, seems like software problem, but there are variants.


Did you mean 1060 3G or 6G version? In my case 3G won't go over 2300 without extreme overclocking...

Any improvements expected on lyra2z algo in future releases?
Seems there's a plenty of space for speed up on 1080s