As HagssFIN said, don't expect this to be profitable. You'd have better luck mining a different coin (perhaps Zcash or ETH) and then trading for the x11 coin you want.
If profit is not your goal, and you just want your Nvidia GPUs to mine on x11, then I'd recommend a version of ccminer:
https://github.com/tpruvot/ccminer/releasesYou'll probably have to use an older version, IIRC, x11 support was dropped at some point.