Did you verify this by pulling the card out of the camera and testing it in a computer to see what time the video files stop or if they go right up to when you pulled the card. Sometimes when i try and access the playback on my V2s, it hangs a bit before the timeline populates. Just trying to rule out a connection issue causing lag or latency when trying to pull up the playback.
What are your local storage settings? event only or continuous? Have you tried swapping sd cards to other cameras to see if the issue follows that one card? Whats the firmware version of the V2 with the issues? What app version are you using? I know you said “up to date”, but if you could state out the version numbers for ease of reference, and to know if you are running beta or production software. Thanks for replying!
Edit: late add but check out this info also, may apply here to: