In your lua app, can you make a settings menu with a graphics menu with different modes, like standard ntsc, pal, 720, 1080 resolutions all as selectable choices then have it on a timer after they select the new resolution and it changes to see if it works, and if they don't press [yes it works] within the 15 seconds (aka, they can't see it because they picked the wrong screen resolution), it kicks back to the default ntsc resolution? That might work for you.
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