Hi just putting it out there (i’ve emailed support but not had a response yet). Since using the Frontier X it has highlighted that I suffer from Atrial Eptopic beats which seem to vary in number and doesn’t seem to matter if i’m at rest, low or high intensity workouts. I have tried sleeping with the chest strap and am finding larger amounts of “others” and different heart rhythms with differing distortions to them or greyed out areas. I assume this is due to movement during sleep (sleep on front, side and back during the night) . I have tried sleeping with a compression tri top to see if this stops the monitor from moving and whilst I seemed to reduce the greyed out areas I am still getting a variety of distorted heart beat rhythms, which don’t appear to be getting at any other time. Is this likely to be an issue due to the movement of the sensor, has anyone else experienced similar issues. Many thanks.