Disable Windows Ink For Your Wacom Tablet & Keep Pressure Sensitivity In Adobe Photoshop.
Kindly follow the following advice to solve this problem:-
Disable Windows Ink From Wacom Tablet Properties if you haven’t already.
You can access this dialog from the start menu.

Open Notepad, or any text editor of your choice
As long as it can save files with the TXT extension.
Type the following lines in the file:-
# Use WinTab
UseSystemStylus 0
The first line is not really necessary, as it’s a comment. And it just tells Photoshop to use Wintab on its own.
Save the file with the name PSUserConfig.txt
Place this file Into Photoshop settings folder.
C:\Users\[User Name]\AppData\Roaming\Adobe\<Photoshop Version>\<Photoshop version> Settings\
The exact path is different based on the version of Photoshop version you have installed, as well as the username you are logged in with. In my case, the path was like this on the computer I am typing this with:-
C:\Users\daniel\AppData\Roaming\Adobe\Adobe Photoshop CC 2015\Adobe Photoshop CC 2015 Settings
Note:- The AppData folder is hidden by default. You need to unhide it first before proceeding, or to just paste the folder name in Windows Explorer. Click here for the instructions on how to unhide folders in different versions of Windows.