Minecraft version(s)

1.20.1

Minecraft version details

No response

Mod loader

Forge

Mod loader version

47.3.0

Fabric API version

No response

In what kind of world or server did the problem occur?

My singleplayer world that I opened to LAN

What went wrong? (Crash logs don't go here)

I'm building a large modpack that includes Pehkui as a dependency for the Magic Origins mod. Recently, I've noticed some freezing issues that do not resolve on their own. After reviewing the logs, it appears that Pehkui might be involved in the cause of these freezes. I haven't seen other reports about this error, so I suspect it could be due to incompatibilities within the modpack itself. Could you help me determine whether Pehkui is indeed the source of this problem?
I'va putted the Thread Dump in the here https://pastebin.com/enwrNFxi, cause it's too big.

If needed for tests or something, this is my modpack: https://www.curseforge.com/minecraft/modpacks/ainzs-tempest-ultra

Full list of installed mods and their version numbers

https://pastebin.com/cNDK6hVb

Did the problem cause the game to crash?

No.

Full crash report contents (if you experienced a crash)

Crash report output:

Having the same issue. I have another large modpack. Now the weird thing about it is, that it crashes silently (ticks stop), mostly because it's trying to access some data that the thread no longer has. Now the funny thing is, if I remove only and only Pehkui from the modpack, everything is going well.

Now what I am trying to understand, is what does a mod related to entity size, has to do with world generation, and blocking a whole thread because the requested resource is no longer available.

Here's a log, if it might help: https://mclo.gs/LWg71bU