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ISyncYouSyncWeAllSyncForDeSync

Quality of Life

Version 1.5.3-b42.20.4-connect · Updated Sep 27, 2026 · 3.3 MB · 25 downloads · ISyncYouSyncWeAllSyncForDeSync

Background multiplayer sync support for Build 42.20.4, with adaptive Java vehicle playback, road download priorities, native packet validation and server-side compatibility fixes. Vanilla networking still runs; ISync works alongside it.

Vehicle playback

Adaptive Java vehicle playback and correction limits for vehicle condition snapshots.

Road priorities

Road download priorities, plus preservation of recovery requests.

Quiet by design

Health snapshots run once per player arrival, with no periodic sampling, client pings or recurring network commands.

Server authority

Native packet validation and server-authority fixes. General player, zombie and combat support is retained.

What's new in 1.5.3

  • Vehicle part fix — vehicle condition snapshots and corrections use B42's getPartCount and getPartByIndex, fixing repeated VehicleParts:size exceptions.
  • Join detection (1.5.2) — the server player cache detects real session arrivals, since B42 doesn't emit OnPlayerConnect.

Requirements

Project Zomboid Build 42.20.2 – 42.20.4. Single-player and multiplayer. Java component 1.5.0. Restart the server and game after installing. No FPS improvement is claimed.

FileSizeSHA-256Download
ISyncYouSyncWeAllSyncForDeSync-v1.5.3-b42.20.4-connect.zip3.3 MBce56983a96d5afc3bd1bba52c1fd418479d01ad36bd828e33f222489d5663c22