The glasses display is faster and steadier: the phone now builds each frame and sends only what changed, so the route map keeps up with you and no longer freezes mid-run. The map is clearer on the glasses, with the route drawn tighter and the stats strip as crisp text. The glasses keep updating while your phone is locked in your pocket. The phone previews exactly what the glasses are showing. Fixes: a bad GPS fix no longer stops the app, the glasses pick up a run already in progress, and the app tells you what to check when it cannot find the glasses.