Just got my Vaio Duo 11 yesterday and found myself a bit disappointed with the inking performance, compared to the Wacom based tablets I owned before, it felt like the NTrig stylus needed a bit more "initial force" to activate a stroke which resulted in the missing beginning part of a stroke. Just now, found this new driver on NTrig's website specifically for Duo 11, the version number is 4.15.3840, and seems like this driver has improved the inking performance, especially on the "initial force" issue, it now requires less force to start a stroke and the whole inking experience feels smoother in general. I am not sure what I felt was objective, or maybe I was just too excited to see a driver update, Let me know your feedback. P.S. sadly, this driver didn't solve another problem I have with the NTrig digitizers, which is the jagged line work when draw long and fast strokes. seems like the NTrig sampling frequency cannot keep up with the hand movement, hopefully this issue could be fixed in the future update.