I apologize if this has been covered but I don't seem to be able to find it. I have a 2020 ram with the small screen. When the truck was new, the Nav worked great but something seemed to change the default from Fastest to shortest route. I know you can select it manually every time you enter a route but I want to change it to default to fastest. I am not real fond of towing a three ton RV down pig trails. Any suggestions?