Intuos PRO and PSCC issue

Hi guys,

here's my problem: usually while I'm drawing in PSCC my pen stops working well. Instead of drawing following my hand movements, it simply draws a straight line from where I start drawing to where I stop. Basically, it draws a geometrical chord. The only way I can temporarily solve this is tapping outside PS.

I have Intuos pro small size with updated driver, win10 e PS CC 2018.

Any idea?

Thank you