I have Lenovo yoga c740 with Lenovo pen and This issue happens only in illustrator (works perfectly fine in Figma and painting software).
The illustrator often doesn't act upon touching the screen with the pen. It's ignoring the touch detection.
It happens like once every 4-5 clicks, which is enough to make the software unusable for touchscreen work.
Also, when drawing with brush, mark isn't made in real-time - after drawing a mark, only once i hover the pen it gets painted on the screen. (Drawing with pencil doesn't have this issue).
Any suggestion? 😕