Just bought DR750S-2CH model recently and after a few days of trialing I noticed when checking the videos in PC Viewer app, the front camera video is played 5 seconds late compared to rear camera. For example in the rear camera view I already parked, while the front camera still showing the car in motion. I use PC Viewer v1.20 (latest) and camera firmware 1.06 (latest). I re-update the firmware twice with rear camera plugged in but it did not resolve it. Is there a PC Viewer setting to synch up front and rear videos that I've missed? Or is that a recording hardware timing issue between the two cameras?
PC Viewer - Front Camera movie 5 seconds behind rear camera movie