My Apple Watch series 9 has started to flicker green all the time (except when charging). If I disable the pulse-detection it stops but if enabled it flickers almost constantly. Battery has gone from about 50% after a day to less than 30%. I’ve tried reinstalling the watch but it doesn’t do any difference. Any hints here? Batteryhealth is 92%. It starts to flicker green just if I remove it from the charger aswell without even wearing it.