I've never had Strava give me an inflated elevation number, ever. This just means I'm going to get boned on elevation gain even more than I have in the past. For while the Garmins I've owned have been consistent, they also read consistently low-- I've done a climb into the local mountains half a dozen times, and know the listed elevations for both the start and the finish: 1,320ft at my house, and 6,140ft for the end point. That's 4,820 feet of absolute veritcal, if the road just constantly climbed from point A to point B. It of course does not, and there are several dips and drops along the way. Strava has never given me more than 4,600 feet on any trip. If I were to use altitude correction, it would likely chop off another couple hundred. But hey, Strava already rounds everything down except calories, so we shouldn't be at all surprised.