With the latest beta 12 Display Fusion will not allow you to turn of the right click context menu entries. You can uncheck the box in settings and select either Apply or Save but it will put the check mark back and display the DF context entries.
Can you fix this?
This is a side-effect of the way the installer remembers the settings chosen when it was manually run. If you download the installer and run it manually again, and uncheck the Context Menu option, it will remember that for future updates.