Lag using multiplayer synchronizer #29

EdouardKaci commented 2026年05月01日 19:27:11 +02:00

Using multiplayer synchronizer on nodes propertie create a severe lag on steam (spacewar), around 1 to 4 seconds of lags, while there is no lag with local multiplayer simulated with hamachi , around less than a second of lag.
The lag doesn't append with RPC functions. only with data passed throught the node MultiplayerSynchronizer.

Using multiplayer synchronizer on nodes propertie create a severe lag on steam (spacewar), around 1 to 4 seconds of lags, while there is no lag with local multiplayer simulated with hamachi , around less than a second of lag. The lag doesn't append with RPC functions. only with data passed throught the node MultiplayerSynchronizer.

cridenour commented 2026年05月01日 22:54:19 +02:00

The peer itself can't even know if its a synchronizer or a rpc - we just pass bytes around. I would expect to see RPCs affected as well.

The peer itself can't even know if its a synchronizer or a rpc - we just pass bytes around. I would expect to see RPCs affected as well.

EdouardKaci commented 2026年05月03日 18:10:24 +02:00

After some test we found out that there is indeed no lag difference between RPC and multiplayer synchronizer, but the project suffer low lag without using steam (Enetmultiplayerpeer) in local (simulated with Hamachi) (no noticeable ping) and there is a lot more lag with steam (around 2 seconds).
Also there is no lag with Steam.sendP2PPacket, tested with voice (discord and the game had no difference).
Empty project doesn't have any lag difference between Steam and Enetmultiplayerpeer.

After some test we found out that there is indeed no lag difference between RPC and multiplayer synchronizer, but the project suffer low lag without using steam (Enetmultiplayerpeer) in local (simulated with Hamachi) (no noticeable ping) and there is a lot more lag with steam (around 2 seconds). Also there is no lag with Steam.sendP2PPacket, tested with voice (discord and the game had no difference). Empty project doesn't have any lag difference between Steam and Enetmultiplayerpeer.

gramps commented 2026年05月06日 22:36:35 +02:00

That's pretty weird. Is that empty project also using the Synchronizers? Though I guess that shouldn't matter at all, right?

That's pretty weird. Is that empty project also using the Synchronizers? Though I guess that shouldn't matter at all, right?

EdouardKaci commented 2026年05月15日 11:21:05 +02:00

we tested alll the same condition with the same gd script

we tested alll the same condition with the same gd script

gramps commented 2026年05月15日 22:28:18 +02:00

Well, I do not have enough networking experience to unravel this one. Haha.

Well, I do not have enough networking experience to unravel this one. Haha.

cridenour commented 2026年06月07日 16:05:23 +02:00

https://github.com/ValveSoftware/GameNetworkingSockets/issues/398

https://github.com/ValveSoftware/GameNetworkingSockets/issues/398

gramps commented 2026年06月07日 19:59:19 +02:00

That makes sense then. Though I don't know I'd start messing around with outdated client files.

That makes sense then. Though I don't know I'd start messing around with outdated client files.