Grinhecker

UPDATE: this seems to be an Arch-specific issue. Switching to Ubuntu server fixed EVERYTHING.

as I said, the logs are empty when this happens. It just freezes without any error and throws no errors or warnings

I'm experiencing a critical issue on a dedicated Arch Linux server running the latest Forge for Minecraft 1.20.1. When a player exits a Nether portal (not enters, and not via /tp) or teleports into the End via portal, the server completely freezes for 1–10 minutes. During this time, all commands are unresponsive, and the game world essentially locks up. This is with watchdog disabled. Environment: OS: Arch Linux (latest packages) Java: OpenJDK 17 (up to date) Forge Version: Latest 1.20.1 (tested multiple versions from the past ~3 months) Mods: None (issue occurs on a clean install) Server Type: Proxmox VM with: 4 virtual cores 64 GB RAM (63 GB allocated via -Xmx and -Xms flags) Observed Behavior: Observed Behavior: The server freezes for 1–10 minutes when: Exiting a Nether portal (entering does not trigger the issue) Entering or exiting the End using a portal Teleporting using commands (e.g., /tp) works only for the Nether; teleporting to the End via command also causes a freeze The issue occurs anywhere in the world, not tied to specific coordinates or builds During the freeze: The server becomes completely unresponsive to all commands and player actions No crash reports, no errors, and no warnings are logged CPU usage remains under 50%, and RAM usage stays around 6–14 GB After 1–10 minutes, the server recovers automatically and resumes normal operation