Hello and welcome,
Do you have the driver of your Tablet installed?
Do you have any scaling on Windows above 100%? (Maybe you have a 1440p or 4k screen)
If you have scaling On then it is mostly likely the culprit, and we can work on it.
Another possibility is that changing the input method in Krita could resolve the issue. If you have your Driver installed then here what you can do, go to:
Settings → Configure Krita → Tablet settings
Change the input from Wintab to Windows 8+ (Windows Ink) (Or vice-versa)
On your Driver application change the input to match the one in Krita. Like this:
- If Krita has Wintab → Gaomon Program has Windows Ink unchecked
- If Krita has Windows 8+ (Windows Ink) → Gaomon Program has the Windows Ink checked
Let’s know how it is going.