I’ve recently upgraded to an Elite Direto XR-T and am struggling to get it working properly. I’m running Zwift on a MacBook Pro (with the Companion app on Android), using Bluetooth to connect. The first time I used the trainer, I did a spindown calibration in Zwift, after warming up for 10-15 minutes.
Today was the first time I tried a workout in ERG mode and it was a complete mess. The power values were fluctuating wildly, +/- 10-15 W or more from the target value while holding a steady cadence. This lasted all the way through a 1-hour workout – so frustrating! At its worst, the target power was 120 W at 90 rpm, and my power was rising as high as 146 W before falling back down to ~100 W again. Honestly, my old wheel-on trainer was much more pleasant to use in terms of power stability.
After the workout, I tried calibrating the trainer again, this time using the My E-Training desktop app and it gave an offset of 6670, which exactly matches the calibration offset on the sticker on the trainer.
What else can I do? Is it possibly due to an unstable Bluetooth connection, or is there something else I should check before shelling out for an ANT+ dongle?