Hi. To start off, I love this product, and I learn a LOT from users here! Part of the reason I own product, and upgraded to ver 11 is b/c of this very active user community.
That said, I wanted to toss this in FWIW:
My playlists were 100% perfect with prior version, and also seemed fine with the 11.1.145 update. I only had that update for a short time before I messed with some of the DSP settings. (prob not a good idea, yeah, I know...)
Anyway, after setting various settings in DSP Studio, I noticed the same thing (I think)... After hearing one track perfect, the 2nd track (from same album sometimes btw) sounded like pretty lousy with vocals almost "gone" and the left and right fields sounding weak and "tinny". Stopping / re-starting would fix, but it would come back.
I've reset all DSP Studio settings back to the defaults, restarted, and so far so good.
I know it's not very scientific, but I suspected the DSP settings that I messed with. Guess I'll see how it goes with the settings reverted.
I'll post back i any changes.