cudaminer.exe -i 0 -C 2 -l 32x4 -m 1 -o stratum+tcp://doge.vircurpool.com:3333 -O economist.1:111
copy-paste it and try:
cudaminer.exe -i1 -H1 -C2 -lL28x4 -o stratum+tcp://doge.vircurpool.com:3333 -O economist.1:111
thanks. but error:

Try without all the other parameters
cudaminer.exe -o stratum+tcp://doge.vircurpool.com:3333 -o name -p password
Thats how i use it on my Nvidia card.. this way cudaminer will adopt its own parameters doing a own performance test.