Well, In a few words, feel like I've been lied too. Having tested hundreds of simple and more complex strategies in NT8, virtually all post results radically different to the strategy analyzer. I'm beginning to think NT8 and others for that matter, lure traders in with the false hope that automated trading is possible for the sole purpose of getting them to trade. Maybe I'm burned out but even basic strategies such as MA crosses aren't even remotely accurate when using market replay. I've spent countless hours back testing and have slowly realized it was time wasted, pissed and depressed all at once. I really wanted to believe that an automated trading system was possible but it's not, not unless you've got fiber, a super slick HFT setup or similar, and live blocks away from the exchange. Back to trading by hand...