ALL 18.XX (and Beta 19.09) Navigation Issue

When navigating a course during a running activity, both ATA and ETE valus are absolutely unreliable.

I have a lot of kilometres to go but about ATA end ETE I'm 1-3 minutes to arrive...

It happens navigating a course, a POI, or a saved location.

It also happened with the previous Version 18.XX, and still happens both with current Version 18.26, and Beta Version 19.09

It worked perfectly with Version 17.26

Please, take a look to the "955 19.XX Public Beta Reports"; another user has the same issue:

https://forums.garmin.com/beta-program/forerunner-955-series/public-beta-bug-reports/i/public-beta-version-19-xx/19-09---navigation-issues