Check your FTP in zwift and make sure that it is the same as your TP FTP. The numbers go into swift as %'s. Also, Zwift round the numbers to the closest 5.

Check your Power zones in TP and if they match Zwift. Zwift uses 7 zones as defined by Andrew Cogan IIRC, whereas TP has a number of different options.

If you want them to match, you may have to manually set the TP power zones to the same %s of threshold that Coggan prescribes.

EDIT:

Coggan Power zones here, which I believe Zwift is based on -> https://www.trainingpeaks.com/...wer-training-levels/

80/20 power zones calculator here -> https://www.8020endurance.com/8020-zone-calculator/

They are different %s as 80/20 has X and Y, so it's difficult to plan an 80/20 workout and then see the results in Zwift. I would just focus on the hitting the workout in Zwift and ignore the zones, then look at TP for your compliance.

A problem I encountered is the ranges you set in TP get averaged out to a specific target in Zwift.

I had set some targets for a HIIT workout in TP with 120%+. Zwift interpreted that as an average of 320w and some other huge number.

So, you pretty much have to design the TP workout to an actual target % then let Zwift do its thing in workout around if you hit the zone.

Had the same issue after a little off season and reduction in FTP. My coach changed it in TP (I believe) but I didn't change it in zwift. I would upload the workout and the numbers were based on the old ftp.

As mentioned, zwift also averages out for the screen display, so a range of 190-215 may show as 200. But I don't think that's what you are talking about

Bottom line, one of those ftp settings has to be off to get what you are getting.

Line up your FTP between Zwift and TP. And make sure you have the 7 zones set. My biggest issue is that my power meter and my trainer are 15-25 watts apart