Composite video will always have a flicker to it when used with games not intended to be viewed at standard resolution (converted to composite from the VGA output). In addition, that board doesn't support a TV type output. So anything you do to get it to play on a TV will look substandard. All it has is RGB arcade monitor video on the JAMMA interface, and VGA pc type monitor out. Only the RGB output will make the pix look like it should. A video converter box with component video outputs would be the next best thing, but your TV doesn't support it.....