It seems to have started for me since the update on the 18th.. since before then it was perfect.. to the point where i almost have to wipe my entire server.

Try unsubscribing and then resubscribing. Sometimes that helps.

Originally posted by Hydromancerx:

Try unsubscribing and then resubscribing. Sometimes that helps.

I'll try that now

~Edit~
Just tried that, still lagging on server though fine in single player.

I ran a fresh test server with no buildings or any other mods, and just hydrocraft and the lag was there from second 1 of the launch. This started only recently, as of the 18th i would say. I Cant use hydrocraft and its probably the best mod for this entire game... go back to the way it was before or fix this please!!!!! :(

To clarify, the zombies will stutter for like 2-5 seconds.. dissappear entirely.. phase back into existence and appear like they are falling from the sky.. then carry on as always. In addition everyone on the server was getting black loading walls every time they walked into a new section which sometimes crashed the server or persisted for minutes. The moment i removed hydrocraft from the server we had a crisp clean performance again.. no lag on anything not even a second. I can run across the map without a single pause on my admin character, but while it was installed i could maybe run a screenlength before hitting the lagwall. I'm not sure what changed but i do love this mod and really appreciate you for developing it. It adds endless amounts of content to this game that i wish was implemented into vanilla. Thank you for your hard work and creativity.

Our server also gets spammed with an error about irrigation or water pipes but im not sure if this is whats actually causing it.

@Razyeul - It is very hard to pin down since some people have no lag and some do. The only thing that seems to work sometimes is if you unsubscribe and then resubscribe to the mod. Beyond that all I can do is remove bugs where I find them in hopes it reduces lag. Note all the lag problems happened AFTER build 39 of the base game so whatever was put in by the devs is messing with some peoples performance when Hydrocraft is active.

Well hydrocraft seemed to work perfectly fine after build 39, but after the update on the 18th this zombie lag seemed to have started. It was very minor before this, so im assuming it has somethign to do with that update. I will test the new one!

So the zombie lag is 100% better after the more recent updates.

@Razyeul - Oh? Not sure why that would help it.