I noticed fluid requester do not act like other buildings as in they aren't actually part of the same network as their fluid output would suggest and instead are pushing fluid into the fluid network their fluid output would suggest they are part of. This is likely due to them being disabled via script and the script is what is doing the pushing. I am not sure this issue is easy to fix but what can be done is warn the user that they may need a storage tank buffer to not be throughput limits if the fluid network fluid output would suggest is small.
suggested fix: add a tips and tricks entry about the nonstandard behavior and suggested work around of a storage tank as a buffer that the depot can push into.