tpruvot's release seems to have lower rates poolside than in the miner window.
zcoin dev posted a public ccminer with fix for rates poolside problem
with this public ccminer (correct pool rates) :
1060 6gb (micron) (70% tdp): 1200 kH/s
1080ti 11gb (70% tdp): 3260 kH/s
will test on 70ti this week end ..
For lyra2z it doesn't matter what memory on board. That's why it is one of the best for top GPU's, just like skunk. 1080 is exactly 2 times faster than 1060/6Gb