I used have Dirac and spent months setting thing up and having several correction modes and curves. Then spent months deciding what worked best. Ultimately I found the music lost its 'soul' and I found myself gradually listening and enjoying less.
Then out of the blue I turned Dirac off one evening and found I was enjoying my music again.... After that night and subsequent days, I deleted Dirac and have never looked back. I have a messy non-ideal room response according to Dirac, but I couldn't care less as all that processing sucks the life and soul out of the music. Technically it may not be correct, but emotionally its far better.
I did try hard to get things working... I'm just glad I fortituously turned it off one night.
What I learnt is that careful speaker positioning/toe-in and trying the long wall out and adjusting the distance from the back wall in 1cm increments is far better than any DSP.