My pen stroke is weird in Clip Studio Paint

https://preview.redd.it/3blnavss9mxd1.png?width=1366&format=png&auto=webp&s=eca7f74060db30936739a37a3e8e86f8331b0292

Hi! I've been using my wacom intuos since 2015, and yesterday it's been having this problem. The pen stroke makes this scribble look just like what I put in the image, but sometimes it's back to normal, and sometimes the pressure just doesn't work. Last night I updated the wacom driver and it was fixed until this morning when I want to draw and this happen again. I don't think it's my CSP problem, but I don't know what's the exact problem either:(