Yes, I’ve experienced it. I when setting up the ALFRs on the long wall I needed a TV for the AV8805. Since I just needed it to see the settings I used an old 27” monitor. Well a 12 foot wide sound stage for a 27” screen doesn’t work! I kept being pulled out of viewing the movie because it was so odd. It was not much better on the short wall with the speakers 10’ apart. I finally put up our old 50” TV which was almost tolerable compared to the 27”. I could at least view a movie but it was not great. Your setup is worse (12’/55” v.s 10’/50”) which is why I’m surprised,