More struggles with PowerMatch this morning.
The structure of the workout is 1 minute at 120% power, 30s off, repeat 7 times. Break, repeat, break, repeat, done.
https://www.trainerroad.com/career/duncanm23/rides/48045233-bashful-1I felt OK on first set - was hard but doable. Second interval of second set, the resistance just died off. I don't know if it was the power meter, the trainer, or TR on my phone, but it was like I finished the interval. Resistance didn't pick up for the third one, so I stopped and recalibrated the trainer, and suddenly I was having to do 400W instead of 300W! I then recalibrated my power meter, which jumped from 18 to 23, but made no difference. I then stopped the ride, turned off bluetooth, turned off TR, and booted everything back up. I rode 2 intervals at 400W, and then changed the intensity to 85% so that the resistance came down and I could do 400W. I turned it back up again for the last set, and resistance seemed a bit low, so I wasn't able to get 300W unless I span at >110 rpm. I was short on time by that point, so I skipped ahead to the cool down.
I can see the advantages of erg mode, in forcing you to do the workout as specified, and not clunking up and down the cassette, but it's really frustrating when this sort of thing happens.