ConnectivityFixes "lost connection: timed out" disconnects on big packs

Version: 5.5 · MC 1.21.1 · NeoForge 21.1.228 · Java 21

About

Patches the keep-alive timeout that vanilla applies during initial login. On heavy modpacks like ATM10, login can take 30-60 s while client and server sync chunks/data; vanilla times out at 30 s and kicks you. Connectivity bumps the limit and improves timing.

Things to do

Getting started

Auto-applies on both client + server.

Official documentation