Never did the calibration because I never had the need to do so. Always perfectly in sync for me, even before the home theater mode was introduced.
Try to do the wireless audio calibration for every frame rate manually ( for example do it for 60hz, then change the output to 50hz do it again, then change it to 24fps, then do it again...)
That should fix it. Run the calibration for every frame rate with frame rate matching off and then when finished turn it on again.
As for the enhanced dialogue feature, I´ve heard is quite the game changer. Not only the pods have louder dialogue with it enabled, but apparently a louder maximum volume in general without distortion, which is great for content mixed at a low volume.