I just joined Zwift and am using a wahoo kickr. I did a workout recently and found it very odd. Zwift would set the power goal (e.g. 200w) and I would aim for that. It was almost as if there was a arbitrary gravitational pull towards the number that was the goal. I could peddle really hard and I would stay right at the power goal or I could slack off and it would still stay at or near that power goal. It felt like the connection between my trainer and zwift just wasn’t there. On a bike, a small increase in power you can feel how it propels you past someone or helps you gain…but didn’t feel anything like that in this workout.
Meanwhile, I have experienced it doing a general group ride. Granted, it isn’t as accurate as when actually riding but it did feel like there was a relationship that didn’t exist in this workout. Is there a chance that your workouts calibrate power differently or something?