The Atmos is noticeable when the movie is encoded in the Dolby Atmos, flawless. If there are faults in the Atmos encoding, then it will not be noticeable 100% of the time. The movie's post-production team sometimes doesn’t focus enough on encoding the Dolby Atmos properly, and that’s why in many movies there will be flaws in the Atmos effects. Like many bullets and a few helicopters flying will miss getting the Atmos effects.  But if you watch the Dolby Atmos YouTube video, the Atmos is noticeable 100% of the time. Because that video is encoded very well.