Used 2019 yesterday. Markedly improved DPS in new system. Wondering why you want to use external. You can always hear prompts through radio or headphones
Have you used the GTS for a trip? While it is much easier to see the screen, and boots way faster the software needs lots of work at the very least.
Stop and get gas, and it reroutes you on back roads for the rest of the trip. So you have to select avoid hwy, let it recalculate. The deselect avoid hwy and it now will put you back on interstate.
Destinations, 6 out of ten time were on the opposite side of the road from what it tells you. Distance to turn is way off, you will go by every turn if you listen to it.
Get a phone call and the iPhone does not resume playing music when call is over. You have to make another call, and then hang up for music to resume.
Shut the bike off get gas, and start it the iPhone does not resume playing unless you unplug it and plug it back in.
Those are just a small example of the crap.
I do not have much faith in HD to get it fixed. They are still trying to correct issues in the GT from 2014, five years later