Power match seems to be working for me again now. I wonder if it's just spiky intervals it had issues with. I calibrated the trainer and the PM before I started.
Good to hear. I've not been able to get Power Match working for me. I've now tried doing a couple of sessions with my power meter disconnected so using my trainer to measure power.
That works to the extent that it enables me to do a workout with a steady resistance level, rather than bouncing all over the place with Power Match, so that is good.
However, I'm also recording my power meter output at the same time via my Garmin. What I find is that there is significant difference between the levels of power measured by the trainer and by the power meter (average is about 15W) and, more importantly, it is not a consistent difference. I did some under and over intervals last week and, for one of the overs, I spun up to a high cadence. I felt the resistance fall and although my trainer power / trainerroad said the power had gone up, it actually felt easier than the previous under. My power meter said the power was lower, and my heart rate started to fall.
It's now at least usable, but I'm not confident that I am getting exactly the work-out that I am supposed to be getting.
I did a short session on the Tacx app and the power seemed rock solid. Next I'll do a longer session and see how it behaves, comparing to PM. I've also got another Stages PM so can swap that in to see if there is an issue with the one I am using.
I've asked TR where they think the issues is: Stages PM, their software or Tacx trainer - but no answer yet.