I used Zwift yesterday for the first time, having bought an Elite smart turbo trainer this week.
I know the Turbo can provide a power measurement, but I decided to use my 4iiii Precision (crank arm) power meter instead to provide the power data - have I done the right thing? I presumed it would be more accurate and of course at least it’s the same as when I ride on the roads in terms of power measurement.
Also, I noticed that when pairing sensors, you get a choice of Power or Speed. I’m a bit confused by that, I have a Garmin ANT+ Speed sensor attached to the rear hub, but it seems it isn’t being used. Is Zwift calculating the speed some other way? Obviously I chose to pair my power meter rather than the speed sensor. Perhaps Zwift simply looks at how far you’ve ridden and the time, to calculate the speed? Or does it use the power data too somehow?