I suggest you set it as "AUTO SWITCHLAPSE".
If there is motion atrought car,the MOITON DETECTION function will be actived.
and dash cam will record 15 senconds.
after that,the TIMELAPSE function will be actived.
but there is a litte problem,as it will take serval senconds for the function transformation.
so it will drop frames during the time.
I think it is just a very very little problem.
you can ingore it.