You don't have to keep making adjustments unless you wanted to try different things. With the app, it should take a couple extra minutes.
I realize once you make the adjustments, they are done and not needed again. However the point is that there are many adjustments that are needed. Going by my experiences with Audyssey and reading numerous other's experiences.
The whole point of Audyssey was to get those adjustments correct. That was suppose to be the advantage over more complicated hand calibrated levels, crossovers, and distances. If Audyssey can't get these correct, then there is no benefit. If anything just the opposite because when done by hand, they are correct and done the first time.
If you have a calibration system that can't calibrate, it's useless. I calibrate instrumentation for a living so this is a big deal IMO.
I can not trust a calibration when I know that the simple parameters are calibrated incorrectly. Yes, I can change those bad calibrations but what's the point then in using that calibration system. It's flawed, and can't be trusted to calibrate any of the parameters correctly.
When I tried numerous times, as did my brother-in-law on his Marantz, we got incorrect levels, distances, crossovers and overly aggressive EQ settings that made the music/soundtracks, sound terrible. That's why we both bypassed Audyssey and is echoed all over the internet.
I've experienced Audyssey and since my equipment has that feature, that where my most interest has been. However it's not just Audyssey, numerous posts and statements with other systems on Yamaha, Onkyo, Pioneer Eite, and Sony(ES) can be found describing the same problems I've sited.
I can't trust a calibration system that I know can't calibrate the settings correctly. I don't like the sound quality these incorrectly calibrated settings have produced. That is why I leave Audyssey bypassed.
If you like the sound and don't mind adjusting incorrect levels made by the system, that's fine as well. We have our likes and dislikes, just like with DSPs that various receivers offer.
My issue isn't whether someone likes the sound or not, it's saying that this Audyssey makes CORRECTIONS. It doesn't, it makes "CHANGES", not corrections, that some may like.