Recording/Playback problem on back to back recordings

On the Tablo v4 DVR, I record two 30 minute shows that air back to back on the same OTA channel daily. On some days when I watch the recordings, the first show plays back just fine, but the second show playback on any iOS, Android, Fire TV, Google TV, or Roku device is all messed up with audio and video totally out of sync, and the video seems to studder/freeze a lot even though the audio continues.

Comparison, on an old Amazon Fire Recast DVR using the same antenna system and same OTA shows on the same channel, both of these back to back shows play back just fine.

It is an occasional issue even on the old Tablo’s.