[roenxi]

You were right; that was a case of Simpson's paradox. Every category experienced a latency boost but the overall statistic worsened. Jevon's paradox is what caused the induced demand, but when the new usage data was gathered the initial review was an example of Simpson's paradox.

Effect of the change -> Jevon's paradox.

Measurement of Jevon's paradox -> Simpson's paradox (in this case, that isn't a general rule).

The fact that the two are easily linked is one of the reasons the statistical paradox is so common in practice.