Gigabyte HD 7970 im getting around 360 kh/s with these settings

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
.\vertminer-0.5.3\vertminer.exe --scrypt-vert -o stratum+tcp://stratum.vtcpool.co.uk:3333 -u XXXXX -p XXXXXX -w 256 -g 2 --auto-fan --temp-cutoff 95 --temp-overheat 85 --temp-target 75 --gpu-engine 1050 --gpu-memclock 1500 --gpu-powertune 20 --thread-concurrency 8193 --intensity 13

The only thing i actually changed from mining other coins with cgminer is the thread concurency up +1 from the old 8192
works fine on both vertminer 5.2 and 5.3