Server lag from EntitySpider.onUpdate

[Ableytner]

Your GTNH Discord Username

Ableytner

Your Pack Version

nightly-881

Your Server

private server

Java Version

Java 21

Type of Server

Vanilla Forge

Your Expectation

Hostile entities shouldn't affect server performance too much

The Reality

EntitySpider.onUpdate uses ~10% of server tick time, despite me being in the personal dim without any enemies loaded / visible.

The only idea I have is that somehow claiming / loading chunks (in my case three chunks on Ganymede) spawned spiders and didn't unload them.

https://spark.lucko.me/tqo9ONzysW

Your Proposal

Possibly fix

Final Checklist

• I have searched this issue tracker and there is nothing similar already. Posting on a closed issue saying the bug still exists will prompt us to investigate and reopen it once we confirm your report.
• I can reproduce this problem consistently by follow the exact steps I described above, or this does not need reproducing, e.g. recipe loophole.
• I have asked other people and they confirm they also have this problem by follow the exact steps I described above, or this does not need reproducing, e.g. recipe loophole.

[Caedis]

Something something minecraft AI bad