Not sure the right place to post, have no idea where else to ask for help, can't even ask properly googl to get decent results .Must explain all to show whole picture of problem.I got server which runs headless factorio instance. Same server also runs teamspeak, subsonic and utorrent at the same time.The server is connected to switch. My PC on what I play factorio is connected to same switch. Said switch further is connected to router, and router to internet. All connections is Gigabit.Server has USB-Ethernet adapter, as integrated nic was regularly dropping connection and not holding stable speeds at all, no option for pcie nic because only slot is populated with raid card, not gona dich that one .When utorrent downloads file factorio connection lags really bad, got stuttering on my end for tens of seconds, basically game is unplayable. At same time utorrent, subsonic and teamspeak is working just fine. At the moment of stutter happening I connect to server with remote desktop connection (seems a bit slower too), the cpu usage on server is around 30%, cpu is 4 core, 8g ram, so that's the last I suspect.Can be any software/hardware issue, but I guess something because of factorio/utorrent udp nature. So my question here is, how am I suposed to track whats causing this, need tips for tracking. If some hardware needs to be changed I prefer knowing what to buy and why, not just blindly changing random stuff until it works.
I didn't find the right solution from the Internet.