Garmin dezl770lmtdHi all,apologies if ive posted in the wron

Dow:
Hi all,apologies if ive posted in the wrong section being a newbie ,i recently bought a garmin dezl 770 lmtD and last week using it set at shortist distance around a place near team valley and it took us on every b road 1/2 hour longer to our destination at one point wanting us to turn right which would of been a struggle in a car never mind an class 1,any ideas ive looked at the settings,has anyone else got one?any problems?ive just updated it and is only 4weeks old…thanks

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