You've done calibration and standard IV abuse (Mersenne Twister RNG), correct? I just finished up my calibration, but I failed in hitting my target time. I believe I did everything right up until then (eg. getting a seed with the desired IV spread, getting my offset of 1 second, attempting to hit with the right date and time). I'm still a little rusty on 5th Gen RNG, so maybe you can help.