I have found navigation on both my previous 520 Plus and my current 1030 to be problematic at best. It's barely acceptable on road rides, and pretty much useless for mtb and gravel. Why? because it seems to regularly lose the course/track and bombard me with 'Off Course' and 'Make a U-Turn' messages even though I'm right where I need to be. I've tried native courses from Garmin Connect, Strava Routes, dragging & dropping .FIT files from ridewithgps.com right into the Edge file system - all courses produce (to varying degrees) the same errors & issues. I've tried all the different GPS settings available in Activity Profiles and nothing seems to improve it. I've bailed on multiple new courses in the last several weeks because the navigation simply cannot tell me where I need to go.
After five years of riding with Edge computers, I'm coming to the said realiztion that Garmin navigation is complete and utter ***. Before I dump this thing and defect to Karoo or Wahoo, I wanted to see if the Community had any ideas.
Thanks in advance for your advice...