Hi,
I was trying to speed up the process of going through image via the internal image viewer and thought this option could help with that but I could not enable it at all.
Under Preferences --> Viewer --> Mouse Buttons --> Mouse wheel
While "Advance to next image" is selected, clicking the check box and hitting OK and going back to the settings page you will see that it has been deselected.
Windows 10 2004
DO Pro 12.21.6 beta
i9-9900K - 2080Ti