is MalisisCore generating something?

[14:40:22] [Server thread/WARN] [FML]: MalisisCore loaded a new chunk (-36, -36 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.

Hi, just wanted to report that I've been experiencing the same issues. I notice it's not just just MalisisCore that's reporting this in my log. Just the main offender.

[05:28:00] [Server thread/WARN] [FML]: Ore Flowers loaded a new chunk (14, 11 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.
[05:28:01] [Server thread/WARN] [FML]: MalisisCore loaded a new chunk (-1, 32 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.
[05:28:06] [Server thread/WARN]: Fetching addPacket for removed entity
[05:28:09] [Server thread/WARN] [FML]: MalisisCore loaded a new chunk (-2, 32 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.
[05:28:09] [Server thread/WARN] [FML]: MalisisCore loaded a new chunk (-3, 31 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.
[05:28:12] [Server thread/WARN] [FML]: MalisisCore loaded a new chunk (-5, 28 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.
[05:28:22] [Server thread/WARN]: Fetching addPacket for removed entity
[05:28:23] [Server thread/WARN] [FML]: Ore Flowers loaded a new chunk (11, 9 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.
[05:28:23] [Server thread/WARN] [FML]: Custom Ore Gen loaded a new chunk (10, 9 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.

Followed by a lot of "Can't keep up!" messages.

Apologies if you're already aware of this, but all I know is that this is a known problem, with more info here

I don't really know what would cause it. I don't do any worldgen in my mods, so the only way I can think of it happening is with the vanilla doors I replace. Either way I wouldn't worry to much about it.

Did you actually check the thread @Ordinastie ? You need to add flag 16 to setBlockState calls to prevent neighbor updates, which you are not (I see you pass only 3 in MalisisItemBlock), so if you're setting a block on a chunk border then it's neighbor chunk will also be updated.

You're not the only one who doesn't know what's causing this though, I've suggested that Lex add a stacktrace option in the hopes that modders can narrow this mystery down.