Online has been extremely unplayable for me due to the networking issues, especially around a busy system.. Aulin in my case.
It causes problems with jumping between systems, docking bugs such as pad not highlighted / wrong way round, huge delays entering docking bay.. 5mins + etc etc...
In solo, its fairly smooth and consistent and the bugs above do not present themselves, even though there are still network comms going on. Must be the P2P element of it. I am on 100mb DL (well closer to 70) and 20mb upload speeds, in the UK too.