It's a shame we are all at odds with our ATs. I love so much about my 2019 non-AS, but I'm about to leave it at some random intersection because it is so loud. I think my hearing at age 70 would thank me for doing that. I've ridden other bikes, including naked bikes, and haven't had a problem like this. So, I'd like to make peace with the bike!!
I have a SwegoTech Fork Shield, and a 20" MadStad screen. I put them on at the same time (not a controlled scientific experiment for sure!), but they did help a pretty decent amount when there are light winds. However, when I'm in heavier winds, or a cross-wind, it's crazy loud, and my ears ring for days afterwards.
I'm 6-3" with a 34" inseam. I've tried a Shoei RF-SR helmet, an Arai Vector 2, and even borrowed an HJC that has the sun visor come down...so, it's not the helmet for certain.
I think that the wind that hits the hand protectors and mirrors is creating a lot of the turbulence. I think I will try mirror extenders -- I see a good portion of my shoulders in the mirrors as it is, so pushing the mirrors out an inch or more will hopefully reduce some of the turbulence that hits my shoulders, and rocks my brain.
The MadStad screen is already much wider than the stock, but I am going to try widening it out at the base a little more, but using spring loaded clamps and experiment with the cardboard piece from a binder. I think I will extend the MadStad screen out by 3 or 4", on both sides. I will make it maybe 6-8" high, so that it will block the wind from the hand guards and mirrors. If that works, I'll get some Lucite, or whatever it is, and screw it to the MadStad, or, maybe I will buy some clamp-on wind deflectors (like the ones that many people mount to the top of the screens) and put one on either side. I have a Camel Screen brace, to help support the extra load on it, if my experiment works. The MadStad doesn't bounce around with the stock screen supports, but it wasn't built for such heavy additional loads, for certain.
I contacted MadStad in the spring, and they might be interested in looking further into this problem -- of course, if it is financially rewarding for them to develop something, and sell a whole bunch of them. So, I encourage you to contact them as well!!
I sure hope my experiment works, because, and I'll be honest, I was looking at Gold Wings -- at least it was the sportier F6B model!! Lol. However, I already know my hearing isn't great, and I don't want to be that 70 year old who can't hear a darn thing....I'm almost 60, so that isn't too far away.
I will report on my findings.