Google maps taking me in circles?

[djohnson]

I like to use google maps as a say-nav since I find it’s better than the car system most of the time. However I’ve recently had a challenge with it a few times. It’ll send me on a route then ask me to turnaround and go back, or it’ll do a fairly wide circle around the destination getting there eventually. Yesterday if I’d done what it wanted I’d have gone through the tunnel under the river Mersey and then literally turned around at the next roundabout and gone straight back through the tunnel. I’ve looked at the settings but can’t see anything obvious. Any ideas? Thanks