Warning: Do not update to 184.108.40.20649
I'm using a F2-420 and recently updated Plex to the new version and it simply doesn't work anymore. Choppy playback, constant buffering even without transcoding, anything transcoded is completely unplayable (so no subtitles). I'm not sure why an update is such a huge step backwards in terms of resource usage but I did not have these issues until the latest update. Your results may vary but I wanted to warn users since there doesn't appear to be a way to get a working version once you update.