ugh...had to set -I 12 to get rid of HW errors. I have 3x 7950s each at 66kh right now.
put: -G 1 -I 18 -W 512 --thread-concurrency 35840 rest of your setting should be fine.
(1792 x 20)
See if that gets you to 120Kh/s range
thanks for the suggestions. my config file and miner thank you. i'm getting 114kh at -I 18