This is getting me an average of 344kh/s with an ASUS R9 280X.
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://vtc.coinvention.net:4333 -u USERNAME -p PASSWORD -v 1 -w 256 -I 13 -g 2 --lookup-gap 2 --gpu-powertune -20 --temp-target 65 --temp-overheat 75 --temp-cutoff 80 --gpu-memclock 1500 --gpu-engine 1000 --thread-concurrency 8191
Vm1L8ygvYke8XjzXYMeSPZSRSpPhSzKxRZ
which model do you have? the 3 slot version or the 2 slot? (the 3 slot is v2, the non v2 version is the 2 slot one)
I have the 3 slot one and can get nowhere near that, lucky with 280/300