Power fluctuations in Kickr v6

This power oscillation is caused by using too easy of a physical gear. Wahoo recommends at least a 2.5:1 gear ratio as the minimum. FWIW the Zwift Ride is 3:1

https://support.wahoofitness.com/hc/en-us/articles/16865097915666-Zwift-virtual-shifting-with-Wahoo-smart-trainers