If your model doesn't have IQ routing, then maybe looking at a new device with it is the answer. If it DOES have IQ routing, how old is the map? The current one is 870 and 875 comes out in a month.
What exactly do you mean when you say "takes you way out of the way all the time"?
Can you give some examples with start and finish points? (preferably as Lat/Long coordinates as they are quicker to enter when you aren't familiar with an area).
Then some others with up to date maps can try your routes to see if they are improved.
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