I have a founders edition and I bumped it to
120% power
+190 core clock
300+ memory

Still nothing. I maybe a special special edition card.
[/quote]

For Skein algo you should DOWNclock memory but UPclock the GPU.

With %70 TDP +150-200 GPU and -502 Memory

I get around 2700-2800 mhs with 3 1080Ti (Giga Auros, MSI Gaming and Asus Strix) on Alexis. Consumption is around 650 watts for thr rigs.

GPU efficiencies are around 4.7-5 mh/s. Mostly average 4.9 mh/s.

I do not claim it is the best but so far it seems nice to me.

If it is Zcash, yes you sould OC both GPU and Mem.