howdy2u2
I will assume you are running win 10. What I had to do to get a 560 to run with a 1060 was remove the 1060 and only install the 560. clean driver install and then remove the 560 and install the 1060 in its place, then install the 560 in again after drivers installed and recognized the 1060. Basically it's a PITA

bcavnaugh
Are you Folding on one and not the Other?

Ranmacanada
I had this happen before.  it is an old known bug in folding when you use 2 different cards of different generations/platforms.  There is not much you can do to fix it as it's a rare bug, and it's a PITA to troubleshoot.

howdy2u2
I used the catch all 373.06 driver to get mine to work, although I was running win 10. Since win10 updates your drivers whether you want to or not it probably wont work now. Since the OP is running win7 it could be worth a try to roll back drivers unless they need the ones they are running currently.

kerryd
There is no  fix the 700's and newer cards will not play nice with each other well folding . there is a temp. fix but did not last very long . Here is the post where I went though same thing .
https://forums.evga.com/FindPost/2566898
Both cards will fold just fine but fha client just has them back words makes the 770 look good at 500k ppd or more the 1070 not so good at a 100k .
here is a post over at FHA https://foldingforum.org/...c.php?f=74&t=28275 . In short it works but did not work for long for me . Here is what you do
     <slot id='1' type='GPU'>
  <client-type v='advanced'/>
  <cuda-index v='0'/>
  <gpu-index v='2'/>
  <opencl-index v='0'/>
</slot>
<slot id='2' type='GPU'>
  <client-type v='advanced'/>
  <cuda-index v='1'/>
  <gpu-index v='1'/>
  <opencl-index v='1'/>
</slot>
<slot id='3' type='GPU'>

nathan_P
330-360k is still low as a 3gb 1060 should get 300k by itself. how many cpu cores do you have free?