hi , my monitor resolution is 1600 1200 , its a old monitor , in pubg i have 1600 1200 resolution in windowed or borderless , but in fullscreen i have to play with very bad resolution , i dont have 1600 1200 option in fullscreen mode , what i should do? , i tried everything like adding custome resolution in amd addrenalin or changing game user settings , or changing settings in amd addranlin , pls help