I did a structured workout last night and was a bit stressed about the values shown by my Drivo. I understand that the 10-20 watts you are talking about is because the Drivo samples quickly and accurate, but this was the graph I got from a segment (ERG Mode) set to 230w over 3 minutes:
Minimum 192w, max 286w but average was 233w which is within what is expected. The variance is still a whooping 94w.
Is this still working as intended?