Yep, like some of the other posts here it's one of two things or a combination of those two: AC being influenced by external circumstances and my state of mind.
In the music room here AC abnormalities aren't an issue since that's been addressed. Before I had the AC adequately addressed, I could litterally pick out what was different and not right when the AC was really being screwed with.
My mental state is an ongoing issue
(don't even go there... LOL!). Most of the time if I'm distracted or stressed, the playback just takes me out of all that. On occasion though, when I find myself unwilling to be calmed for whatever reason, I might as well read a book or blow up one of our cats

The music means nothing to me and since I don't care to be engaged, it's boring. Fortunately, that's not often but when I'm off my end, even my wife's advances are boring
