Happened again recently when on a trip to bath. I jumped out of the car at Guildford, and it too just so long to calculate that I gave up and picked towns along the way from my smartphone. Then eventually as I was only 15k from Bath, it calculated in time. From what it seems to say here is that the garmin maps have too much detail and it drowns the device.. is that right? IN which case, where can I get a replacement map for the UK and Ireland?

Thanks,

Gav