Twinkle Star Sprites (Neo Geo)

I loved this game on Neo Geo. when I got a jamma machine I had this on snk multi cart and there was some slow down which was passable as it gave you a chance to assess the oncoming cutesy flyers.
But on the switch the slow down makes it almost unplayable!! I stuck with for 25mins and have given up. Unless there is a setting I am missing but it cannot be down to switch hardware specs. Perhaps a dodgy emulation?
Please patch this game and sort out the slow down!!!!!!