I’m using Tacx Genius connecting via ANT+ dongle on a mac. When using ERG mode, power is constantly about 10-15% higher than target in ERG mode. Ex. when 280 Watts is the target, achieved power will hover around 300-305 even while maintaining smooth pedaling at constant cadance. This has happened every time I use ERG mode on Zwift. With Tacx app or Trainerroad, ERG mode holds resistance very close to target levels.
I had read that Zwift`s ERG mode was designed to provide some ‘slack’ around the target but regardless of what I do (changing cadence higher lower, changing gears) the resistance always settles down to a higher than target level.
Any help with this would be appreciated.