Hm. But stylus and touch screen workings... If I upgrade, what changes can I expect to see? For instance, I find at the moment, when I go to engage touch screen stuff, (rotating, pinch zooming in Clip Studio), that there's a pause enough to make the first try never work. Is that different now? How about stylus glitching? -Sometimes when I go to draw, instead of appearing under the nib, the line will start several inches away where my finger might have brushed the screen. Has that sort of thing been given any attention? That's the only reason I'd consider blowing a day (or possibly more) installing AU, -and possibly risking the system lock up problems some people were reporting.