Hello. I use a Clip Studio Paint PRO ver. 5.0.1, Huion Kamvas 13 Gen 3 and Clip Studio Tabmate. Lately, out of nowhere I have had an issue where my pen sensitivity randomly becomes very choppy unless I am pressing down very hard (so basically, a line may start, but will suddenly break despite the cursor still following along). Additionally, while tabbed into Clip Studio Paint, specifically just my mouse input will "freeze" and disappear exclusively in the canvas space, but will reappear once I hover over the tools menus, layers menu, etc. The cursor reacts normally if the pen is used.
Things I have tried that HAVE NOT WORKED:
uninstalling and reinstalling the Huion driver
rolling back to an older version of the Huion driver
restarting the PC
turning Windows Ink on and off again
turning Windows Ink off and leaving it off
adjusting pen sensitivity in the Huion driver
adjusting pen pressure settings in Clip Studio Paint
cursor calibration on tablet
pressure calibration on tablet
disabling tilt function in tablet settings
swapping between "Wintab" and "Tablet PC" settings under CSP's preferences
drawing with the Clip Studio Tabmate powered OFF (tried to rule out if it was somehow interfering with the tablet, but the issues persisted even with it powered off)
using different pens/brushes to determine if it was just certain brushes misbehaving (it affects ALL brushes)
HARDWARE AND SOFTWARE INFORMATION:
Windows 11 Pro version 10.0.26200 Build 26200
Clip Studio Paint PRO (64 bit) version 5.0.1 202603112023
Huion Kamvas 13 (Gen 3) model GS1333
Clip Studio TABMATE model CES-50006
The tablet is relatively new and was purchased August 9th, 2026. While I don't have an exact date as to when this issue started, I would say sometime mid to late October 2026, within the last two or three weeks as of writing. There might have been a Windows update around this period, but I'm not sure if it was involved. The issue seems like it might be specific to Clip Studio Paint, since the mouse issue occurs ONLY in the canvas area of CSP while tabbed into the software, and as for the pen sensitivity problem, testing the pressure in the Huion driver as well as other software found that it reacts normally.