The timestamps in exported CSV files only have 7 digits to the right of the decimal point, or 0.1 usec accuracy. If the sample rate is, say, 3.125 Mhz, or 0.32 usec between samples, then all the timestamps are off by either +0.08 usec or -0.02 usec. That means you can't, for example, determine what the sampling rate was by computing the difference of the first two timestamps. Instead, you have to average hundreds of them.
It would be great if 9 or more digits to the right of the decimal point were displayed.