Hello terryfromhumnoke,
Thank you for using Apple Support Communities and for sharing these helpful details with us. We want you to get the most out of your Apple Watch Ultra. Allow us to assist you by sharing some helpful troubleshooting steps you can try to get better results from your Apple Watch ultra. First, we’ll like to recommend some basic steps you can try. Please restart both your iPhone and Apple Watch Ultra. This can sometimes help refresh things:
1.) Restart your iPhone - Apple Support
1.) Press and hold either volume button and the side button until the power-off slider appears.
2.) Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3.) To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo.
2.) Restart your Apple Watch - Apple Support: On watchOS 9
1.) If your Apple Watch is charging, take it off the charger.
2.) Press and hold the side button until you see the power button 
in the upper-right corner of the display.
3.) Tap the power button.
4.) Drag the Power Off slider.
5.) After your watch turns off, press and hold the side button again until you see the Apple logo.
Also, you might want to try to calibrate your Apple Watch. This step helps improve Workout and Activity accuracy: Calibrate your Apple Watch for improved Workout and Activity accuracy - Apple Support
1.) On your iPhone, open the Settings app.
2.) Tap Privacy & Security > Location Services.
3.) Make sure that Location Services is turned on.
4.) Scroll down, then tap System Services.
5.) Make sure that Motion Calibration & Distance is turned on.
6.) Continue with the steps below.
We hope these steps are helpful. Thank you for using Apple Support Communities. Cheers.
