Hello, I have a bunch of .mkv files that are 4K resolution but not sure how to get them to play without buffering. As you know, the files are pretty large so have them on a NAS but I don't mind putting some on a USB 3.0 Drive and sticking it in the X6 Pro if that is what is needed. I am not sure what program to play the movie from the USB stick as I think I tried the media center and it wouldn't do it. Should I use Kodi and play it from that player? If so, do I map the USB drive as a source? Sorry for the many questions as I just want to play the files in 4K to the TV from this thing.