Route selected on MyDrive app changes to Fastest on TomTom

Kiwi1950
Kiwi1950 Registered Users Posts: 1
Apprentice Seeker
On the app, I enter a destination, it always shows the fastest but usually gives two other alternative slower routes. If I select one of the slower alternative routes then send to device (TomTom Go600) the device displays the fastest route, not the one I’ve chosen. On the GO600 I tried changing the various options in Settings > Route Planning from “always take fastest route” to “ask me....” but this has made no difference.
Any suggestions would be most welcome as I’ve asked TomTom support and didn’t receive a reply.