At 25FPS you should see ghosting.
My background includes CCTV design and to avoid flicker in old CRTs at 25Hz the TV/display maker would use long persistence phosphors. To get a phosphor it would indeed smear and ghost from bright to dark areas. Nothing was considered busted but as we move past the CRT days you may feel leftover effects from those days.
-> You probably do not want a TV with 25Hz capability for use on a PC.