I've been converting my DVD collection to MP4 using Wonderfox. I put them on a brand new Toshiba Canvio II external hard drive to watch movies from the hard drive on a Vizio smart TV through the USB port on the TV. The issue I'm having is that on some movies the video appears to stutter or pause ever so slightly on a consistent pattern during playback. It's more noticeable in scenes where the is a fly-by shot or someone walking around. Any idea what could cause this? Is it the transfer rate or something else?