The multiplayer mode is now critically broken following the Khans of the Steppe expansion. The moment someone plays or becomes an Adventurer, the game becomes unplayable due to instant and consistent Out of Sync (OOS) errors.
Out of Sync (OOS) – Every Single Time as Adventurer.
Since the release of Khans of the Steppe, multiplayer games desynchronize within seconds of loading a save if any player is an Adventurer. We’ve tested this thoroughly:
• Both players created custom Adventurer characters.
• Let the game run for 2–3 in-game months (~1 minute).
• Saved the game.
• Reloaded the save -> OOS occurred within seconds, every time.
• Repeated the process multiple times.
• Switched host machines.
• Reinstalled the game from scratch on both PCs (including full user folder wipes).
• No mods, clean installs.
• Two high-end PCs with 1 Gbit/s fiber connections.
Result: Multiplayer is broken as soon as an Adventurer(player) is present.
Landed Characters Still Work, until They Become Adventurers.
Multiplayer currently works only if all players are landed rulers. However, the moment a player becomes an Adventurer, whether by choice (e.g., decisions/events) or force (e.g., title loss), the save becomes corrupted. Any attempt to reload it will immediately result in an OOS error for all players. That campaign is lost.
Out of Sync errors are common in CK3 multiplayer, but this specific issue causes the MP game to become completely unplayable within seconds.
Out of Sync (OOS) – Every Single Time as Adventurer.
Since the release of Khans of the Steppe, multiplayer games desynchronize within seconds of loading a save if any player is an Adventurer. We’ve tested this thoroughly:
• Both players created custom Adventurer characters.
• Let the game run for 2–3 in-game months (~1 minute).
• Saved the game.
• Reloaded the save -> OOS occurred within seconds, every time.
• Repeated the process multiple times.
• Switched host machines.
• Reinstalled the game from scratch on both PCs (including full user folder wipes).
• No mods, clean installs.
• Two high-end PCs with 1 Gbit/s fiber connections.
Result: Multiplayer is broken as soon as an Adventurer(player) is present.
Landed Characters Still Work, until They Become Adventurers.
Multiplayer currently works only if all players are landed rulers. However, the moment a player becomes an Adventurer, whether by choice (e.g., decisions/events) or force (e.g., title loss), the save becomes corrupted. Any attempt to reload it will immediately result in an OOS error for all players. That campaign is lost.
Out of Sync errors are common in CK3 multiplayer, but this specific issue causes the MP game to become completely unplayable within seconds.
