Only thing that pops in my mind would be the cards are stuck at lower clock state somehow.  Tried monitoring the clock speeds with nvidia-smi?

Testing this right now with 6x 1060 6gb OC - a rig i use for testing.
Normally running claymore on dagger getting a nice 22 mh/s.

Getting this as an average:

GPU1  46C  Sol/s: 300.0  Sol/W: 4.14  Avg: 296.6  I/s: 158.8  Sh: 0.25   1.00 31

Does anybody have sol/s rates for a 1060 to see where if this could do better?
Also, what do the +++ on the right mean?

I just set up my 8x1060 3GB rig through SMOS and I'm not seeing any plus signs on the right of the cards.  The other numbers seem to indicate they are earning shares, based on shares/min numbers, etc but the lack of "+" is concerning me!

GPU0 68C Sol/s: 272.7 Sol/W: 3.44 Avg: 274.2 I/s: 146.2 Sh: 1.49 1.00 98
GPU2 68C Sol/s: 276.4 Sol/W: 3.44 Avg: 275.6 I/s: 147.2 Sh: 0.00 . .
GPU1 66C Sol/s: 270.9 Sol/W: 3.47 Avg: 273.4 I/s: 147.3 Sh: 1.49 1.00 101
GPU3 68C Sol/s: 267.6 Sol/W: 3.40 Avg: 269.8 I/s: 146.1 Sh: 0.00 . .
GPU4 68C Sol/s: 271.6 Sol/W: 3.42 Avg: 271.8 I/s: 147.3 Sh: 0.00 . .
GPU5 62C Sol/s: 274.9 Sol/W: 3.48 Avg: 279.1 I/s: 148.7 Sh: 0.00 . .
GPU6 65C Sol/s: 279.9 Sol/W: 3.50 Avg: 280.0 I/s: 148.2 Sh: 4.49 1.00 97
GPU7 56C Sol/s: 287.3 Sol/W: 3.62 Avg: 289.1 I/s: 151.4 Sh: 2.99 1.00 98
========== Sol/s: 2201.2 Sol/W: 3.47 Avg: 2212.9 I/s: 1182.4 Sh: 10.45 1.00 98

 If it matters, I'm using dwarfpool.  Maybe it is due to the RBPPS and the payouts don't take place until a block is found?  

Edit:  just spotted a "*", still waiting on a "+".  Haha!

My evga 1060 6gb solo fan 70%PL 190 core 380 memory 65% fanspeed

 GPU4  65C  Sol/s: 306.9  Sol/W: 3.86  Avg: 312.3  I/s: 167.4  Sh: 0.76   1.00 62  +
   GPU1  65C  Sol/s: 311.5  Sol/W: 3.94  Avg: 304.0  I/s: 162.9  Sh: 0.73   1.00 51
   GPU0  60C  Sol/s: 302.2  Sol/W: 4.10  Avg: 311.9  I/s: 167.0  Sh: 0.80   0.99 54
   GPU3  62C  Sol/s: 317.9  Sol/W: 3.79  Avg: 317.1  I/s: 170.1  Sh: 0.78   1.00 47
>  GPU2  62C  Sol/s: 308.1  Sol/W: 3.93  Avg: 307.6  I/s: 164.9  Sh: 0.77   1.00 50  +
>  GPU5  66C  Sol/s: 313.7  Sol/W: 4.04  Avg: 303.4  I/s: 161.1  Sh: 0.74   0.99 47

Hi all

i was mining on Suprnova ZenCash and Whattomine show i need to get 0,053682 ZenCash for 6h but o got 0.032. Why is that? What pool is best for Zencash?

GPU1 56C Sol/s: 323.4 Sol/W: 2.96 Avg: 324.8 I/s: 173.8 Sh: 0.80 1.00 134
GPU4 60C Sol/s: 320.3 Sol/W: 2.95 Avg: 322.8 I/s: 173.5 Sh: 0.74 1.00 135
GPU2 58C Sol/s: 317.1 Sol/W: 3.06 Avg: 317.3 I/s: 169.4 Sh: 0.69 1.00 131
GPU0 60C Sol/s: 321.4 Sol/W: 2.96 Avg: 318.7 I/s: 171.0 Sh: 0.91 0.99 132
GPU3 61C Sol/s: 314.0 Sol/W: 3.03 Avg: 319.2 I/s: 171.0 Sh: 0.98 1.00 133
GPU5 63C Sol/s: 325.2 Sol/W: 2.98 Avg: 326.7 I/s: 175.0 Sh: 0.97 1.00 136
========== Sol/s: 1921.5 Sol/W: 2.99 Avg: 1929.5 I/s: 1033.7 Sh: 5.09 1.00 133

1060 3GB GPUs

This is with 150/1100/100 SMOS Overclock Settings

GPU1 53C Sol/s: 313.4 Sol/W: 3.18 Avg: 318.0 I/s: 171.1 Sh: 0.82 1.00 133
GPU0 56C Sol/s: 314.0 Sol/W: 3.20 Avg: 313.6 I/s: 167.2 Sh: 0.81 1.00 135
GPU2 54C Sol/s: 311.3 Sol/W: 3.29 Avg: 310.4 I/s: 165.8 Sh: 2.18 1.00 141
GPU3 56C Sol/s: 320.6 Sol/W: 3.27 Avg: 314.8 I/s: 169.0 Sh: 1.08 1.00 132
GPU4 56C Sol/s: 319.3 Sol/W: 3.21 Avg: 319.7 I/s: 170.0 Sh: 1.63 1.00 133
GPU5 60C Sol/s: 324.5 Sol/W: 3.21 Avg: 322.3 I/s: 172.2 Sh: 1.91 1.00 134
========== Sol/s: 1903.1 Sol/W: 3.23 Avg: 1898.7 I/s: 1015.3 Sh: 8.42 1.00 134

Hmmm, I can't get close to those numbers.  Even at 150/1100/110 I'm barely cracking 300 across all the cards.

GPU0 64C Sol/s: 279.7 Sol/W: 3.49 Avg: 277.9 I/s: 146.8 Sh: 0.00 . .
GPU1 63C Sol/s: 280.4 Sol/W: 3.50 Avg: 280.0 I/s: 147.7 Sh: 0.00 . .
GPU2 64C Sol/s: 272.3 Sol/W: 3.44 Avg: 274.2 I/s: 147.6 Sh: 0.00 . .
GPU3 69C Sol/s: 274.8 Sol/W: 3.40 Avg: 271.6 I/s: 145.9 Sh: 0.99 1.00 104
GPU4 66C Sol/s: 282.2 Sol/W: 3.49 Avg: 276.2 I/s: 147.4 Sh: 0.00 . .
GPU5 60C Sol/s: 281.9 Sol/W: 3.51 Avg: 279.6 I/s: 148.9 Sh: 0.00 . .
GPU6 67C Sol/s: 298.0 Sol/W: 2.71 Avg: 293.5 I/s: 156.9 Sh: 0.00 . .
> GPU7 65C Sol/s: 297.4 Sol/W: 2.72 Avg: 294.7 I/s: 158.4 Sh: 1.98 1.00 114
========== Sol/s: 2266.9 Sol/W: 3.28 Avg: 2247.8 I/s: 1199.5 Sh: 2.97 1.00 109

This is with 6&7 turned up to your settings 150/1100/110 as they seem to be the best cards, but still top out at ~300Sol/s.

What do the numbers in your rig list look like?  For some reason the memory clock numbers don't change even when I change them in overclock settings, maybe that's my issue:

This is what my Core/Mem column looks like:
1721 1733 1695 1733 1708 1733 1911 1961 (80,80,80,80,80,80,110,110)
3802 3802 3802 3802 3802 3802 3802 3802

The Memory numbers on the last two should be higher, since that is how they are set in the OC settings, but you can see they don't change like the core numbers do.