Rewind feature suddenly reverts to live tv - DirecTV

So we've had this happen numerous times. We start watching a show with the rewind to beginning feature. After we rewind the program it plays fine, but then at some point in the show it stops suddenly and reverts back to the live tv show, which has been in progress of course. So we lose a chunk of the show in the middle. Only option is to rewind...let it buffer for a bit, then fast foward to where it cut off, but sometimes it just plays for awhile and the cuts out again back to live tv.

What can we do to prevent this!

This question, "Rewind feature suddenly reverts to live tv," is about DirecTV channels, programming, equipment, and sports.