Somebody already set up under the new N-factor?
Я пoлyчaю 4,42кH/c нa 280X и 2,62кH/c нa 270X
What miner do you use ? How much memory does it has your card? What are your settings/configuration?
I have R9 280x and has only 3.1 kh/s. I've got cgminer 3.7.2