Sampling settings are “stronger” than that logging interval.
So if sampling+processing takes more time, you basically get new log lines at the rate mooshimeter is able to produce them. In that example, there should be no difference between no wait and 1 second settings and both should give you results every ~1.1 seconds.
With mooshimeter, you cant see the whole signal anyway. There are always those processing pauses between sampling. Fast sampling with small sample size might catch your quickly changing signal and lower sample rate with bigger sample size would smooth random spikes out and might make it easier to see slower phenomenons.