Picked up my AT this morning from the dealer and went out for a 1st ride. I am 1.90 m (6' 3") and was curious how the std screen would perform w.r.t. buffeting. Big disappointment, turbulance and loud wind noise at the helmet. Did not wear ear plugs on purpose. Stopped and installed the adjustable wind spoiler from my previous bike on top of the screen; spoiler 11 cm high. Huge difference, no buffeting anymore. However I will use earplugs in future because there is still much noise; the exhaust is also pretty loud, but with a very good sound. My feeling is that the spoiler does a better job than the touring screen, which is only 8 cm higher than the std screen (measured at the dealer).
(CRF1000LAD, CRF Rally Red, Zumo390)