Disappointing

: Asus Dual GTX 1060 3 GB, Hynix, stock bios, eth:Ubiq, 15 MH stock, 17.8 OC @67% power. There is not a drop in MH with the drop in power.
Update your driver, or uninstall with GUU ( or DUU I dont remember ) then reinstall ur driver back, it should solve the problem.
so drivers will fix the Hynix memory problem?
With Nvidia, memory type are not relevant as the 4xx and 5xx AMD series.
Usually when you have a strangely low hashrate, it is highly related to driver issues.
Try to uninstall them first with the program quote above, install latest driver, and try back in stock mode. We will see how it goes after that.
It seems that you just have no experience with nvidia 1060. The difference between samsung and micron/hynix on memory intensive algos is huge: 19vs25 in Eth