garmin vector

hi, i got some trouble with my wattmeter. it seems my wattage is way lower on zwift then in real life. 

A good place to start is to recheck the torques on your pedals. They loosen up after a few rides. Then after that perform a recalibration, reseting the install angles. Then before each ride take a second and do the static calibration. If that still doesn’t do it then you may want to check the firmware on the units and update if needed. You can also verify that Zwift is getting same measurements from your cyclo-puter.