LUX profitability isn't great right now but then not much else really is that I've found at least not anything you can run through a calc on WTM.
It's particularly terrible for zcash, zcoin, etc..
Are you using ccminer to mine luxcoin? I downloaded it from github and my Windows Defender detected a malware. I probably downloaded an outdated version though, know where I could find a more recent one for Lux mining?