I recently got a Forerunner 945 and the altimeter readings are way off. I'll start and end my run at the same place and it will say +40ft starting and -40ft ending. But using the elevation correction it looks much better. Is there a way to turn this setting on by default instead of just for a single activity? I was not able to find the setting for the default.
Per activity instructions: https://support.garmin.com/en-US/?faq=R4I5hFFcUk8gJPC4zi0Xv6