Samsung PN51D490A1DXZA E-Manual page 144

Game Mode
N
Set
Game Mode
N
Game Mode on before you have attached the game console, you may
notice reduced picture quality.
If Game Mode
N
–
Picture Mode
◀
is not available when the input source is set to TV or PC.
to only after connecting a game console. If you turn
On
is On:
is set to
Standard
English
and
Sound Mode
is set to Movie.
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