I'm doing the Greg 5k plan with my Garmin Forerunner 45. The problem is that, when I run faster, the watch doesn't update my real pace, but it shows the slower pace I was running, example: I'm running at 6:30 then I run faster, like 5:30, but it keeps showing 6:30 even after 10 minutes or more. I'm running in a very large open park, so the GPS to satellites should track geolocate properly. However, when I finish a KM, it flashes my real pace, but then returns to show the slower pace again.
Is there some setting I should correct?
Any help much appreciated