On Demand TV shows freeze up when an AD (commercial break) is going to show at the beginning of a program.

Every now and then, an on demand show will get stuck on the first ad. At the end of the ad, the screen goes black and it replays the final few seconds before going black and looping those seconds again. I have refreshed the box and signal and do not have any splitters. The only other problem posted doesn’t have a resolution. I called Cox and they also refreshed the box. I can’t fast forward since it’s unavailable for this show.