Agreed, the stylus is unusable and falsely advertised. I chose the Hi10 Pro because of the stylus myself and am very disappointed.|
Aside from lacking any pressure sensitivity as was advertised, the pen is generally unusable; finger-drawing is more reliable and faster and smoother. The pen can't even be used to navigate because when it is slightly above the screen it registers "click"s erroneously and at a very high rate. In Android and Windows and the boot selection screen the pen jumps in 2mm increments with a uselessly slow update rate. In Linux you can see why: the pen actually communicates its location fairly fast, but it has piss poor accuracy; holding the pen steady, the cursor jumps around randomly with HALF A CENTIMETRE radius!! An unbelievable magnitude of error. Chuwi's driver for Windows and Remix is designed to take large samples and filter to guess the pen's actual location, it seems; hence the horrible spatial/temporal precision. The pen also can't move in straight diagonal lines: the path oscillates sinusoidally when not drawn along a major axis.
Microsoft's Journal application is very clever, and *almost* good enough at path prediction/correction to make the pen usable. Unfortunately the extreme driver filtering makes the pen too slow and imprecise. If Chuwi could tweak the driver for higher rate & precision (less smoothing, lower accuracy) then the pen could be useful in good note-taking apps, but right now there's no way to use it at all.
Maybe I'll write my own input filter so I can at least make the pen useful in Linux