Snapshot poor focus Stick Up Camera Gen2

I have a battery Stick Up Camera 2nd Gen. I have enabled Snapshot function which works but the picture focus on every snapshot is not great. On video/live mode it takes a second or so for the picture to focus into HD mode...looks slightly pixalated and then goes into focus. The snapshots however look like the initial start of the videos i.e slightly out of focus. Wi-Fi strength is OK - RSI over 50. This lack of sharpness makes the snapshots not much good for identification. I have attached a snapshot to show what I mean more clearly. (the writing on the black box is a good reference point). Unfortunately it won't let me upload a video due to format. Anybody got any thoughts or suggestions please? Is this what others experience with snapshot mode or should I expect HD pictures from snapshots?