The mode options are driving, walking, cycling or scootering. I only use driving, although I usualy use the GPS for motorcycling. I am not sure what "they have in mind by "scootering".
Also I don't use many waypoints at all, usualy just my start and end points. I do use a dozen or so via points. On the first two crash episodes I was able to see that it was saying the closest fuel stations were 200+ miles away just before the crash. Subsequently it would crash before any POI were displayed.
I am wondering if the crashes could be due to map version discrepancies.