Over the last few days my Apple Watch Series 5 running WatchOS 10.0.1 has developed a strange issue. It will randomly vibrate like there is a notification, but when I look at it the screen will have turned off (I do keep the AOD on) and it will be unresponsive for a few minutes (tapping on the screen or any of the buttons does nothing). After a few minutes the screen will come back on and it is back to normal. It doesn't appear to be resetting either as the Apple logo doesn't pop up and I don't need to unlock it once the screen comes back on. Battery Health is currently 85%. Is this a WatchOS 10 bug, battery getting weak issue or just the watch getting old and unreliable? I've been torn between upgrading to a Series 9 now versus trying to hold out for 1 more year and waiting for a Series X but this may push me towards upgrading now...