Erg mode not working fine in elite zumo

[javi.xeneize]

Hi

Lots of people are talking about issues with erg mode in zwift viewtopic.php?f=34&t=2530&start=150. I have the same issue in my zumo

The erg is constantly jumping 20 W up and down, and it is hard to maintain it. I just completed a workout at 150w with an average bpm of 145. Without the erg, I do the same workaround at 135 bpm, so it’s clearly not managing well the power

Has anybody found a fix for this? Calibration seems to be fine

Thanks

[drunk.roo]

Mine is doing exactly the same thing, tried calibrating it, firmware all up to date. Fluctuates on Zwift and on the MyEtraining app.

Extremely frustrating, I can't seem to figure out how people download the TSV file they talk about on the Zwift forums.