I can obviously not help with History Editor timestamps. That software is not from us. But if you believe that a time stamp from your CSV file was also wrong, simply post here that CSV file, script, and log with the wrong time stamp, and we'll immediately look into that. Surely this cannot be so hard?

BTW, Zorro timestamps can indeed be wrong, by 0.5 ms. That's the rounding precision of the used time function library. Afraid that's not a bug.