Glitchy Gesture Activation

I’m having some issues with activation of the screen in gesture mode.

 Intermittently, particularly when it’s been a while since I last looked at the watch, when I turn my wrist to activate the watch, it will only activate extremely briefly- a flicker really. Even pressing buttons or tapping the screen has the same effect. It can be difficult to activate the watch when this happens- usually takes a number of attempts before the screen comes on and stays on. At other times it works as I would expect.

 I’ve updated the firmware, restarted, and then reset to factory settings all to no avail. I wonder if this is a hardware fault with gesture detection.

Has anyone else had similar issues?

 Thanks.