@proofresistant
But here we are (i am) only testing the Garmin approved planning methods right now.
I think this is the source of much of your frustration. More specifically, I believe the tread app is the major source of frustration. (More on that below.)
I have eliminated the Tread app entirely from my world.
... and the zumo XT2 must work as planned!
With the Tread app eliminated, I find that the XT2 does work as planned, including CEP, and off route recalculation.
There are, of course, a few things to be aware of or a few techniques to be followed. Some of that is due to Garmin quirks, some of it is the nature of satellite navigation. jfheath's Everything you need to know post is extremely helpful
viewtopic.php?p=9356#p9356
Most any route planning tool of choice, including Basecamp, will produce good routes, tracks and waypoints which can be reliably imported directly to the XT2 (without using the Tread app). This can be done via gpx file, or using FrankB's Trip Manager.
As we recently discussed in another thread here, I find CEP to generally work well as long as there are no u-turns, points misplaced off the road or placed at intersections.
Jfheath pointed out that he only had to use his convert numbered shaping to via once. If you stop while navigating a route, when you turn the bike off or remove the XT2 from its mount, it will go into standby and will automatically resume the route where it left off when powered back up.
Off route recalculation is subject to RUT if the route was imported, but there are simple workarounds for that such as saving a duplicate copy of the route and navigating that, or using Trip Manager.
My suggestions:
- don't give up on the XT2, just eliminate the Tread app.
- don't expect Garmin to fix anything, just come to this forum and accept the solutions you get here.
Others here have found ways to use Tread but avoid Tread sync to the Explore database, which is the heart of the problem. I don't criticize that approach at all. I simply choose to avoid it entirely.
The Tread app syncs routes with explore. You can log into your Garmin account at explore.garmin.com to see what is there. You will see that explore does not route and does not support shaping points at all. It is no wonder why routes with shaping points get mangled by the Tread app.