As I understand from test results and time stamp, the first picture is the later one and second is the earlier. Within 2h 20min focus shifted.
Was dashcam constantly working / recording, or in parking mode ( motion detection rec. ), or was not powered on and just was "baking" under sun and thats the result after 2h we can see from pictures ?
It was turned off mate although parking guard was active where it runs on battery power and turns on if anything triggers the g sensor, temperatures were around 17 degrees and not really any direct sunlight.
It's kind of that bad I'd hope this one is faulty!
I don't remember the GT680 ever having those problems - they've played with the codec as well so it's not as good quality wise as those were either.