Today randomly my miner got disconnected which has happened many times but after I closed it the bat file would not open anymore.

Not sure what the reason was but anyway I downloaded guiminer again and set up my bat file like
cgminer.exe --scrypt -o stratum+tcp://netcodepool.org:3333 -u xxxxx -p xxxx -d 0 -d 1 --thread-concurrency 8192 --shaders 2048 --intensity 13 --worksize 256 -g 2

I am running 2 7970s and before my gpu 0 got 750 khash and now for some reason it seems to bounce around the 600 range. Not sure how to fix it? I have my clock at 1080 and memory at 1500. I use catalyst to change my gpus and havent touched the settings.

Really frustrating even though its juyst 100 khash its still a pain. Please h elp me!