I just helped my husband fix his Photoshop issue where, at some point, his PC auto updated making Windows Ink a nightmare.

This is how I fixed his pen problems:

1) Make a .txt file named “PSUserConfig” containing only this text:

# Use WinTab UseSystemStylus 0

2)  Place it in your Photoshop settings folder that’s hidden in your AppData.  The default path should look like this:

C:\Users\YOUR-USER-NAME\AppData\Roaming\Adobe\Adobe Photoshop CC 2018\Adobe Photoshop CC 2018 Settings

(Choose the version of Photoshop that you are currently using, for me it’s CC 2018)

Ideally it shouldn’t be replacing anything.  If the file already exists, add the user config line mentioned earlier to that file and save.

These two steps SHOULD be enough.  But if you’re still experiencing issues, you can take it another step further.

3)  Open your Wacom Tablet Properties.  Create an Application Rule for Photoshop, if you haven’t already made one, and click on the Tool you wish to edit (such as a Grip or Pro Pen).  4)  In my version of the driver (Control Panel Version: 6.3.11-4) under my Pen’s settings, there is a Calibrate Tab with a Windows Ink checkbox at the bottom corner.  Uncheck that box.  More recent versions of the Wacom driver may have placed this checkbox elsewhere.

The symptoms my husband’s Photoshop was experiencing was seemingly random tool swapping, delayed pen strokes, pan and scroll becoming interchangeable, and pen pressure inconsistency.  The moment he described it to me, I knew exactly what the issue was XD

I know there are a host of compatibility problems that arise between Windows Ink and Photoshop (and any number of drawing software), so I can’t say this will help everyone, even if the symptoms are similar.  (Also, I’m not much of a tech support– google is probably as much help as I ever will be lol)