Apple Watch activity inaccuracy

Hi all,

My girlfriend and I both have a 4th gen Apple Watches and have recalibrated, checked the settings, followed all the advice on the pages provided, double and triple checked, and we still have huge differences on our steps, distance, exercise and movement. We have been on holiday in Japan and done the exact same things each day, so we have definitely have traveled the same distance, yet I have more steps than she does and she is considerably shorter than me.

Seems like these watches aren’t accurate at all, and this is one of the most important features to us both.

What can we do?

Thanks,

Craig