I do find the Apple car play very slow and laggy, like got a 2-3 second delay when using goggle maps navigation through car play.. caught me out a few times going past junctions etcFirst happened to me when I drove to Europe, so put it down to a signal issue.
But it’s happening round cities, where i have good signal, then thought maybe it could have been down to Bluetooth, but get the same issue plugged in. ¯\_(ツ)_/¯
The factory Vw Sat nav is also terrible, so really need to use the Apple CarPlay to get about!