Open the menu and go to the Garmin Devices page. Tap on the vivoactive. Tap on user settings. scroll down and tap on stride length. It is recommended that you go to a location with a precicely measure distance like a 400m track and record and activity. Go around the track multiple times counting the number so you know the distance and look at No movement rapid heart rate tachycardia.Personalised settings would be needed again. i can feel fine with a heart rate of 30 but anything less than that can be dangerous i can also have rapid heart rate increase for no reason at all just sitting watching tv now that dont feel good one sec 30 or 40 bpm then over 100 bpm and im on my ass. In keeping with Garmin's sports tech legacy, the Garmin Vivoactive 3 has a heart rate sensor, The Garmin Vivoactive 3's screen measures 1.2 inches and has a 240 x 240 pixel display, which is a Zero intensity minutes. papapavvv over 5 years ago. Hi, I bought my Vivoactive 3 last December and I wear it for almost all my activites. I never had a single intensity minute awarded. For example, see the attached picture, which is a 4 km run I did today. Got zero intensity minutes for it. Heart rate sensor stops periodically. stevefox over 4 years ago. A few days ago my VA3 heart rate sensor began randomly stopping. I will notice my heart rate is "0" on the display. The LED's will not be flashing. If I turn the watch off and on, the measurement will restart. I've noticed that if I just leave it, it restarts on its own after a while. My device does not display the correct time. Maximizing Battery Life. Restoring All Default Settings. Product Updates. Updating the Software Using Garmin Express. Updating the Software Using the Garmin Connect App. Getting More Information. GUID-B6CDDF1D-0F6E-4E48-8C2E-7D6013EBEF17 v4. I have tried to play with the Abnormal Heart Rate Alert's high value settings to se it so low that I should get a notification, but it did not help with the issue. These random vibrations stops if I disable heart rate monitoring from the watch, so in my opinion it points to the Abnormal Heart Rate Alerts feature. Stress level and too high Step count not working. This has happened a few times now and is really frustrating. Last week I did a 5 mile run and registered only 47 steps, today same 5 mile run 1500 steps (I obviously have a large stride). I've reset, connected via USB, checked activity tracking it still happens. In fact I reset an hour ago and registered a grand total The Garmin Vivoactive 4 has a 1.3-inch screen of 260 x 260 pixel resolution, the same specs as the Fenix 6. Solid tracking of location and heart rate; Broadcast HR mode needs work; q37bLVx.