I use MameMKV, and it doesn't work out of the box for the Xbox1. I have to convert the rip to Divx5. If I keep the conversion process that MakeMKV provides, not only does it stutter, but I lose sync with the audio track. You can make the video player decode at a lower resolution and that works. If I want to watch any conversions I have to button menu every movie? I don't think so.
Yes it is a PINTA, but if all your gear plays SD, what is the point of making multiple HD versions for one or two devices?
OK I'm cheap, but I see the Xbox1 residing under my TV for a few more years yet.