Question Correctly Stress Testing Netcode

Hello. I am currently trying to decide on what type of Network Solution to use for a project. And for that, i made a simple network stress test program for each solution.
This program creates a GameObject that sends or receives messages of a fixed size every update (via Rpcs).


However, when i run the NetCode version of the program, i keep getting the following message: "no free events for message in the pool".

My NetworkManager is using the UNetTransport component with:

• MessageBufferSize and MaxMessageQueueSize equal to 65535.
• MessageSendMode equal to Immediately.

Am i doing something wrong? Or is this the expected result when sending messages every update?