Graphics 'Overall Quality'

The first thing important to point-out, is that you do not specify your graphics Options fields 'manually' one by one in the 'User Specified' field. You do that from a single place in a blueprint like so:

Let's say the Cinematic is unnecessary. Right-click at [4] input and "Remove array element pin". Run the game and check the result.

And then the 'Custom' of Overall Option Selector is defined like that:

In case you've added something manually in the 'User Specified', then you probably messed-up those quality levels. In such situation, just "Remove All Elements"(trash can) of that Array Of Options property in 'User Specified' and then compile.