I was using lower case the not higher. Higher is giving me 300khash/s but I do have a movie playing :-)
Never been part of a coin relaunch so I don't know how it works
cudaminer.exe --algo=scrypt:2048 -d 1 -i 0 -l t12x20 -o 127.0.0.1:8108 -O 1:x
gives me 166 kh/s, what clock is your 780 running at?