I am using the latest miner and this is my bat file

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
COLOR 0A
del *.bin
cgminer.exe --heavy --vote 512 -w 64 -o stratum+tcp://hvcpool.1gh.com:5333 -u x-p VIP -o stratum+tcp://hvcpool2.1gh.com:5333 -u x-p VIP -I 8 --gpu-memclock 1400,1600,1300,1300 --gpu-engine 1000,1100,950,950

The GPUs are as follows 7970, 280x toxic, 7950, 7950

I am getting around 10MH/s each of these... any ideas? I thought I should be getting 20MH/s each?

I am using the latest miner with the 13.12 installed