Server crash on pregen

Hello,

I have two issues with DH on a server. If I disable DH from the server everything works as expected.

  1. If I log in with DH on client only and move around, the server overloads and I get "Can't keep up! Is the server overloaded? Running x ms or x ticks behind" a few times and then the server crashes.
  2. If I use "/dh pregen start" with DH on server with generation.mode to INTERNAL_SERVER, at first everything is ok, meaning around 50 chunks are loaded instantly, but shortly after that the CPU usage skyrockets, I get "Can't keep up! Is the server overloaded? Running x ms or x ticks behind" errors, the progression slows down a lot, ETA rises, and after some time server crashes with no explanation other than "Error 137" (pop-up in modrinth UI not in console).
I have tried removing other mods to see if it's a compatibility issue, but if that's the case I can't find it.

Have I done something wrong? What should I do to make it work?

Logs: https://mclo.gs/wPXCng8
Info about server:
  1. Server on 4GB RAM (modrinth server);
  2. Fabric server (latest version);
  3. View Distance and Simulation Distance set on 8 chunks;
  4. Mods on the server (all latest versions):
    • AppleSkin;
    • Balm;
    • Cloth Config API;
    • C2ME;
    • DH (2.4.4b);
    • Fabric API;
    • Fabric Language Kotlin;
    • FerriteCore;
    • Forge Config API Port;
    • Inventory Essentials;
    • Lithium;
    • Text Placeholder API;
    • YetAnotherConfigLib (YACL).
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