See the attached image for details. I was 58 seconds from the end of a workout interval. The end-of-interval circle is displayed in the minimap. That circle is quite accurately positioned. Also displayed in the minimap is the position of the rider ahead of me (R. Jajodia). Note that R. Jajodia has already passed my end-of-interval circle. This means that R. Jajodia is more than 58 seconds ahead of me. Yet, on the “Zwifters Nearby” list, R. Jajodia is reported as being only 19 seconds ahead of me. That’s just not possible. Even though R. Jajodia is stationary, I can only reach them in 19 seconds if I speed up to three times my current velocity.
I’ve circled the relevant parts of the image in yellow.