Samsung galaxy watch 4 measures heart rate at double actual

[Wes1000]

My watch 4 measures my heart rate at double what it actually is. Anybody have the same problem?

[Members_c7PPulk]

Yes, same problem.  I have a low heart rate most of the time at 50-55 and always shows just over 100. Seemed to get worse after I did a factory rest when the battery was draining very quickly (had same issue on original G watch) and that always fixed it.

[Terry1979]

I turned off all auto detect activities on Samsung Health except running/walking and that seemed to fix it for me (although not an ideal solution)

[twclark1218]

I have the same problem on my new Galaxy Watch 5. The HR on both the watch and Samsung Health starts off accurate when resting and then after about 5 minutes it displays double and the watch HR is blank (two dashes). I have re-installed apps, cleared cache and even did a complete reset and did a complete restore on the watch and it still shows double as described above. I have heart problems (AFib) and this HR failure may force me to stop using my new watch.

[nathanh18]

5 Pro. If I manually measure with the "Measure" button it is accurate, but continuous or automatic every 10 minutes always reads double my heart rate. Very annoying. My resting heart rate is 40bpm