ok guys interesting question... what would cause horrible lag spikes from this modpack. two people on my server are getting horrible lag spikes from something after i did a buildcraft set up. they think its mariculture tanks and buildcraft pipes. however i do not lag and i am running the server from my computer at the same time.
i have not had any issues with buildcraft ever.
If you quit and restart then you will have the same lag problems as the others, just an fyi.
Buildcraft pipes don't seem to like mariculture tanks/crucibles. Use other tanks if you can. For the crucible, you can have it auto-output to a buildcraft tank and pipe from that tank. Otherwise, break the wooden fluid pipe and the lag will stop. For me, it was causing a ton of client log spam which is what was causing the lag. If you place the mariculture tank, then the wooden fluid pipe, then another fluid pipe and then connect to whatever, it usually will work fine with out causing lag but not always. Do not only have a wooden fluid pipe between the mariculture tank and a destination. That will usually cause a problem especially if you need to wrench the wooden fluid pipe in that situation.