Just curious but did you try AVS ventvisors? Or even the in channels from them or Weathertech? The ones from AVS look just like the factory ones except minus the ram logo.

I find that opening the rear window does help but then I am not lowering the rear side windows fully. Just about 6" or so. I think if you open them the whole way, it will buffet on any 4 door truck you own. At least that is what I have seen to be the case. There really is no fix to be had, they all do it.

Both cars we own and my crew cab experience the helicoptering. Opening up the slider takes care of the problem if you don't want to open a front window.