AW3225QF, what is this Alienware HDR mumbo jumbo?

@Vanadiel​ 

SOLUTION?: I found out why the HDR's in the drop down list locks when activating Smart HDR. In the manual, it says that Smart HDR will be disabled when Dolby Vision is ON. This explains why the HDR's in the drop down menu become disabled when tuning on Smart HDR, it's because it works in conjunction with Smart HDR and Dolby Vision is disabling it. This also proves that the HDR's in the drop down list DO NOT work independently and requires Smart HDR to be ON to actually show. Simply toggle OFF Dolby Vision in the monitors settings and you will be able switch HDR types that the Smart HDR is using.

BONUS: I was using Dell Display Manager instead of the monitors built menu (OSD) because sometimes it doesn't enable Smart HDR when selecting the HDR type in through the Smart HDR sub menu. The screen will go black but it doesn't mean HDR is on UNLESS you see "HDR+" in the top right when opening the monitors built in menu (OSD). Smart HDR can also be toggled ON through the Windows HDR settings, just toggle it ON under "Use HDR"