Resistance ramps up and drops on flats

Yesterday flat course, steady 3R ride. I have noticed, that resistance started to grow from events pace ~200W up to 350W (it was linear ramp ), then drop to almost downhill mode. Issue repeated many times.

Next event, when I was a leader, issue was noticed by another riders.

My TD is set to 20%, Tempus Fugit is really flat for me :slight_smile: