I am using optimized .bin file:

http://www.reddit.com/r/litecoinmining/comments/1va8g2/ann_sgminer_400_release/
Check first comment, I am using the Zuikki's Thread one:

http://www.reddit.com/r/dogemining/comments/1uj4uk/optimized_scrypt_kernel_for_hd7970_r9_280x/


Here is my config file:
http://s18.postimg.org/unmt8iyrt/script.png

1st number in each settings is for MSI, rest(2,3,4) is for TOXIC's
cgminer 3.7.2 ofc.

Feel free to tip if that helped You