I've been getting totally wrong elevation data where it just either drops or rises too much. My runs should be arount 60-70m of elevation gain but forerunner965 shows gains between 200 and 500meters. Also when I'm usin the new satIQ (automatic gps detection) then it usually messes up the gps plot as well. So I'm not inpressed with the watch. Ive added elevation plot of today's run. The kast bit where it drops off - i was actually running uphill. I caliväbrates my altimeter before the run. And was using the Auto Select mode for the gps. In the second screenshot u can see the gps thought I went for a swim.