My dashcam has started lagging - the framerate drops to 5-7 fps. I tried to change Memory Cards - used 2 Samsung cards from the official provider. I tried to restore factory settings - it didn't help. I tried to update firmware - it didn't help. 

The image on the dash cam corrupts - it suddenly changes colors and distorts, framerate drops, the blue light switches on.

I bought the dash cam on 70Mai official store - the seller refuses to make an exchange of the dash cam. I can make a video. Serial No: D05D9C31529