Loss of power since updte

Since the most recent update, I require much greater effort in being able to meet same wattage, making me both slower and more tired. I have posted in Facebook and others seem to have experienced same problem and validated with separate power meter. To make sure it’s clear, it’s like Zwift is not giving credit for all the power we are turning. I am connected vial blue tooth to windows computer. Microsoft Surface, spefically.

What trainer are you using?

Wahoo Snap. New in Dec 2020

Hi @Charles_Brubaker welcome to Zwift forums.

Are you checking your tire pressure before each session? A loss of 10 PSI per week is normal, and that translates to 10-20 watts wasted effort for wheel-on trainers, according to this Saris blog.