hope someone can help with this problem.
this is my first time using cgminer. i have managed to get it working with one one of my gpu's. however when i have a second gpu plugged in i get some strange results. I can only have 2 gpu at a time due to space and heat.

i have one 5870 working fine in all configurations.
one 5770 only operates at about 50% of potential performance. circa 90-120MHs
one 5870 that fan goes ape shit and BSODs

i can run all these card fine with GUIminer. however i have some asic and fpga on order and wanted to get used to cgminer.

any suggestions.