Dear Jean-Daniel,
Wireshark will only show us that the data is transmitted. And that works fine in your case.
The slow ping is the main part of the issue.
Even if the save of the files works like mentioned the files will be compared and that takes time as well.
The best way to solve your issue is to fasten up the ping time.
If this is not possible it seems that you will have to work with what you got.
--------------------------------------------------------------------------------------------------------
Work with NI Hard- and Software for about 15 years now.
Certified LabVIEW Developer & TestStand Developer/Architect
--------------------------------------------------------------------------------------------------------
There are only two ways to tell somebody thanks: Kudos and Marked Solutions