Thank you very much for this extensive explanation, based on your experience.
So you are sitting from ATMOS speakers (184cm) 6ft.
For me, this distance is 300cm (10ft)
I was going to tilt the loudspeaker backwards so that the reverb sound would reach, so I thought it would be better.
However, to follow your indication, I can achieve my effect by setting a greater distance to the ceiling, because I am sitting from loudspeakers (180cm) 10ft.
Question on what value was the distance to the ceiling set?
I understand that the speakers have been in the same place all the time?
Has Audyssey calibration been done after each change?