XG1V4 Playback Issue

Experiencing playback issues on my XG1V4 DVR box:  About one of every eight recordings crashes at some point during playback, crashing at the same timepoint every time, whether during playback or fast forward.  Playback can continue by skipping forward past the offending timepoint.  When it crashes, it will either 1) take me back to live TV or 2) display an error message and start playing the cloud version of my recording.  Is this a known issue with XG1V4 boxes?  Initial guess is this might be a hard drive problem.  Can I get a replacement at the xfinity Store?