Network bandwidth is difficult to estimate because it heavily depends on the type of instrumentation. For example, large attachments such as stack traces collected with exceptions or SQL statements cause much more traffic than simple PurePath nodes.
Also, consider that for your configuration:
Hello @Dominik S.
You are absolutely right that the question was about the web dashboard but there is no specific information is documented for the bandwidth usage except the general idea between the components which I wanted to share with @xiaohe c. as a general understanding 🙂
Therefore, I gave him comments instead of an answer. Thank you for your observation and correction.