Apple Watch gps issue

Again if the reset with the digital crown and side button didn't work your can always try re-downloading the app. Is it the app on your watch or you iPhone? If so try re-downloading it in case there's something wrong with the software. If all else don't work you can always try to reset your Apple Watch to default setting. Settings -> General -> Reset -> Erase all content and settings.

Reset your Watch by pressing in the crown and side button until you see the Apple logo, then release both.

Is the gps tracking correctly tracking?

Go for a run with the Apple running app on the watch and Strava on your phone.

compare the data.

below image is my data which I have Apple stumped, been ongoing for months now even on a replacement watch.

They have an hardware problem.