Out of sync

[kc01]

I'm trying to do some multiplayer on Realism Invictus, the mod works fantastic and plays very well but occasionally our save will go out of sync, seems extremely common early game and then the save is bugged out after that for the joiner. Sometimes, we get lucky and then there will only be 1-2 for the entire rest of the campaign but it's at the point where it needs to be properly fixed, is there any known fixes?

Some more information, the error has happened with us both on windows 10, one of us on windows 10 and one of us on steam OS, and across 2 different versions of RI. We both have very stable and fast internet and my PC is up to the task of hosting even the most demanding maps without any issues.

 

[kc01]

Also, it was common that when making a game with more than 8-9 AI or on the huge and above settings a desync was almost guaranteed in the first 5 turns, but after this it was still a random bet if it would be a complete mess of desync or a game with only 1-2.

 

[aw11]

This helped me and I am playing MP with 4 people in earth huge

Out of Sync Errors Unnoticed​

The problem was that there emerged lots of out of sync errors early in the game. The worst thing was that it is not always noticeable that out of sync occurs. After some time, you see different things than other players. We play one very fast computer, two „normal“ computers and a slow laptop. It seems that the different speeds at which the computers are able to start a new turn cause frequent out of sync errors.

Mitigation 1​

The idea is to slow down the loading of the turn at the fast computers. This is done in CivilizationIV.ini an efficient way by adding logging to the game. To slow down the fastest computer the most, please set the following in CivilizationIV.ini:

; Create a dump file if the application crashes
GenerateCrashDumps = 1

; Enable the logging system
LoggingEnabled = 1

; Enable synchronization logging
SynchLog = 1

; Overwrite old network and message logs
OverwriteLogs = 1

; Enable rand event logging
RandLog = 1

; Enable message logging
MessageLog = 1


We started by setting this to all computers and almost all out of sync immediately disappeared. At a later stage, as computers get slower, try to deactivate some of the logging options to speed up the slowest computer. The goal is that all computer finish turns with as little difference as possible.

Out of Sync With Red, Blinking Message​

Usually, at the beginning oft he turns, one computer takes pretty long to finish and then, an out of sync occurs.

Mitigation 1​

Like above, activate the logs

Mitigation 2​

Restart all computers. Usually, out of sync happens very irregular. Some times it happens four times within an hour and then four hours not. Restarting all computers seem to help here.

Mitigation 3​

In case the OOS seems to occur due to one of the slower computers, change or reduce the graphics resolution. Some resolutions do not seem to work very well on all computers. Also in windowed mode, the OOS still occur. Try another resolution. In the worst case, use the lowest possible resolution.

Timeout of Turn Loading​

If you play with a really slow computer, it is the last to start the new turn. There seems to be a timeout, which causes the connection to break after some time.

Mitigation 1​

If logging is on due to sync errors, deactive some of the loggers to see an increase in starting speed.

Mitigation 2​

Buy a new and faster computer. Thr 10y old game requires more resources than many new games.