Well, that was another weird one from Zwift/ I felt so sorry for Lee. He was pushing hard at 3W/Kg and was just left behind by those of us pushing just 1.7W/kg tryin to allow him to catch up. Then he would catch the blob, be OK for 20-30 seconds, then even though his watts didn't decrease, he was suddenly 25m off the back again.
Bizarre
Yeah, I really can't explain what happened with CCC's ride tonight. I know Zwift's drafting physics isn't exactly super-realistic, but once you learn it, it's normally fairly stable and you know where you stand. Not on this ride however - it was almost as though Lee was on a TT bike (he wasn't, we checked numerous times!) and it was also playing up for others, although in a less negative way. For example there was one point where I was second wheel and easing up at about 1.6 w/kg so that those who'd dropped back to help Lee could catch us, yet somehow I was pulling away from them rapidly despite them doing 2.8 and being a group of four versus us two!
When we reached the desert, Lee gave us the shout to leave him behind - we'd hoped that he'd be able to at least hang on to the back on the flat and sit in our draft, but it seemed that the algorithm had other ideas. Of course, because the first half of the ride had been constant surging followed by soft pedalling, it meant that the remaining riders still had quite a bit left in the tank, so we could put the hammer down and probably did a decent negative split!