tl;dr: This mod causes my bandwidth usage to go up to 3MiB/s which exceeds my internet speeds and thus disconnects me from my server after about a minute due to my "poor connection".

Mod version: 2.5.1 (iirc this should be the one where the bandwidth usage is supposed to be less?)
Modpack: ATM6 version 1.4.1

See detailed description here:
AllTheMods/ATM-6#949

this is strange because I literally removed so updates calls, I'm looking into it.

It should be much better in the last version (2.5.6).

Seems to be fixed, thank you very much! I was able to just drop in the new jarfiles and everything worked fine.

Good. Out of curiosity can you run your benchmark again ?

Of course:

again all numbers in KiB

not sure why our base uses even less bandwidth than in the previous benchmark in the "after cleanup" run. Most likely I forgot some place during the cleanup where somebody had built some contraption. Again thank you very much for the fast reply and fix!

No problem. This is the kind of problems that needs immediate attention.