For example, here is the Core/Mem Column before adjustment:
1860 1860 1860 1847 1860 1860 1885 1936 (100)
3802 3802 3802 3802 3802 3802 3802 3802
Then in the OC tab I added 1100 (I've tried lower numbers as well) to the Mem settings and it didn't look like anything changed:
1847 1873 1860 1860 1873 1898 1898 1936 (100)
3802 3802 3802 3802 3802 3802 3802 3802
Also, that's 7 ASUS 1060 cards and 1 Gigabyte 1060 (all 3GB), but looks like the Gigabyte has much higher clock speed (and it's temp is always ~10C less than the others). I'm sure I could bump up the output on that card with some OC.
I saw someone say if the OC tab isn't working that you might need to delete then re-install rig. This makes me a little nervous, do I just delete it from the dashboard and it will automatically pop back up in the dashboard again when I restart it?
Yes, that is exactly what will happen! If you have no other option, then go ahead and do it. I assure you, the rig will appear again on your dashboard, like it did first time, with noname attached to it.
I also assure you I had the OC thing happen to me too, like 1.5 months ago, and I fixed it like this, after I tried many other stuff, troubleshooting for like 4 hours.