On your Config take a alook at reducing the "SMX" number:
ex. -l K7x32
You can try dropping the 7 to something lower. This can sometimes help. Some games just can't really deal well with sharing gfx. BF4 or BF3 are a great example... my Titan has more then enough power to play them but not with CUDAMiner running at even super low settings. While League of Legends I can just use my normal config and switch it to -i 0 and boom frame rate loss but well within playable.
Thanks!

but not working

still got 10-20 fps using K1x32 (i use K6x32 as default)
reducing it to K1x16 makes no difference in fps too