In August/September 2023 I faced some timing problems of the global form rules. While searching for the issue I noticed that there was quite a lot of traffic.
In a worst case scenaroy, I did transfer almost 10 MB of data when switching between tasks 10 times.
While the post is almost a year old, it seems still to be true for the WEBCON BPS 2024 release. I haven't made a thorough check so.
If you are interested in all the nitty details you can read up on it here.