Odd Blocks That Cause Lag

[mattp_12]

I'm starting this thread because many people might not know what blocks cause lag in modded Minecraft. This is not an issue thread, nor do I have a problem. I just want other people to contribute what they know about lag causers in modded minecraft.
I hope this thread helps people that might have a bunch of machines around there base and are wondering why it is laggy. Some people call it common sense. Other people just don't know why the blocks cause lag. Remember, this thread doesn't just need to be about blocks that cause lag. People can reply about certain enitites, liquids, etc.

Please refrain from going off topic.

 

[Azzanine]

Dirt.
It's everywhere and does nothing but take up space and slows you down when generating new chunks.
Second only to stone.

 

[yotus]

One issue I ran into was because of the XP shower from OpenBlocks, I left it open without me under it for too long, and had 40-ish levels worth of XP orbs in a 1-block space, causing severe lag.

 

[Wagon153]

Open blocks tanks. Terrible for FPS in large numbers and bad for TPS. Carpenters blocks also seem to cause issues on some machines.

 

[epidemia78]

The Buildcraft quarry is the single laggiest block I have ever placed, hands down.

 

[asiekierka]

The Buildcraft quarry is the single laggiest block I have ever placed, hands down.

Have you tried the Builder? Also, the Quarry does... a sizable amount of things (it's internally a state machine!), I'm not really surprised.

 

[epidemia78]

Have you tried the Builder? Also, the Quarry does... a sizable amount of things (it's internally a state machine!), I'm not really surprised.

Builder? Its been a long time since I last used one. And yeah of course quarries cause lag but its way worse than it used to be.

 

[asiekierka]

Builder? Its been a long time since I last used one. And yeah of course quarries cause lag but its way worse than it used to be.

Eh? That's new to me. Time to fire up a profiler!

 

[jaquadro]

Bibliocraft potion shelves (and to a lesser extent, item shelves and tool racks). Loading up a dozen potion shelves with items will cause massive render lag and drop your FPS like a rock. Storage drawers blocks not configured to fast rendering will also cause render lag if you spam enough of them in an area. They're fine if they're empty or sparsely populated, though.

 

[epidemia78]

Eh? That's new to me. Time to fire up a profiler!

Well, its actually a Quarry plus thats so laggy. I haven't used a regular quarry in ages so...

 

[Arkandos]

Most things from bibliocraft actually

 

[epidemia78]

Most things from bibliocraft actually

I suspect a lot of the lag is due to the fact that the models are so heavily detailed.

 

[Celestialphoenix]

Generally any tile entity will cause lag if used in excessive numbers.

Unlike regular blocks, tile entities store extra data elsewhere- which is what causes the slowdown. Nearly everything more complex than a regular block is a tile.
(certainly anything with an internal tank/inventory/memory, or can hold multiple forms of itself)​

Carpenters blocks, and all the microblocks are tiles. I think FMP also changes vanilla stuff [torches/redstone ect] into tiles so the various panels ect can fit around them.