Hello,
I seem to notice a bug on my last ride. My wife and I did a meetup with the option to keep the group together. Both My wife and I were put out 2 wkg or less however we were passing people that were put out a lot more wkg than us, some time 3 or 4 wkg. We were going up hills sometime that were 3% at over 40 kph with only output 2 wkg or less. There were times during the ride where it was closer to reality on speed but a lot of the time we were just passing about everyone. The ride was the “Beach Island Loop Meetup” that I did today.
The application usually works great and we really enjoy it. It was fun passing everyone for a change though. 
Thanks,
Mitch