I've got a 1060 3GB card that for some reason errors out any Collatz WUs it gets. Any idea what I can do to troubleshoot something like this? I already tried detaching and reattaching. I am getting good results with a GTX 980, 1060 6GB and 750ti on the same account with the same settings, so that's what's got me puzzled.

Also, the GTX 980 is busting out Collatz WUs in just over 16 minutes, while the GTX 1060 6GB is taking over 25 mins. From everything I could read online when I bought the 1060 6GB, they should should be really neck and neck with each other. Any idea why the 1060 is so slow and/or the 980 is so fast in comparison?
Thanks for any ideas on either of these questions!