I've been having my S1 since May 2022. I have latest firmware installed (VTS10J.V13). The screen sleep timer is set to 3 minutes but occasionally the screen stays on until the unit is powered off. Also, during recording, the screen will freeze and then after 1 beep it will resume recording. Sometimes the recording freezes (stops) all-together and I have to reboot the unit. I have factory reset the unit and formatted my SAMSUNG PRO Endurance 256GB card but it still exhibits the same behavior. This unit is slowly growing into a ripe lemon as I am unable to 100% trust that recordings are taking place. It's a driving hazard to keep checking to make sure your dashcam is recording.