Help me figure this out (Progressive Scan)

[Duke Nukem]

@Rachel

The option/setting in the Game Properties in the GUI is greyed out and undecided per default and can't be changed there.
However if one modifies the game ini and insert this:

[Display]
ProgressiveScan = 1

The option/setting is still greyed out but ticked like it's been enabled.
Obviously it doesn't work and change anything though.

@ED

No, I don't have v-beam ON. The game works fine without it if I use the regular Enable Progressive Scan in the Graphical Settings - Advanced tab