I have a Garmin Speed Sensor 2 & Cadence Sensor 2, but the speed is MUCH lower than it should be, to the extent that my avatar barely moves. The sensors are synced to my Forerunner 920XT which shows speeds of 30kph at 90 RPM, but the speed dispalyed on Zwift is about 10kph on a seemingly flat road. I’ve changed batteries in the sensor and re-installed Zwift, but the problem persists. Please help!
What trainer are you using?
I would suggest ignoring what the 920 is displaying since it will hardly ever match the speed or distance that Zwift is displaying.