I don't know why but the last several times I played on that server the lag was worse than funbocks by far. My ping was about 50 nominally but it would frequently spike up to ~350. If the server was full, or close to it, my ping would almost always be 350+. Also it would occasionally spike to 700+ and even disconnect for a couple seconds.
It's possible that my internet connection just happened to be messed up those couple days, but I doubt it. I did not play on any other servers at that time so I can't say for sure if it was the server, me, or both.