[2.0.28] Multiplayer lag issues/low fps

[FourMaggi]

Issue:
When hosting the game, the client steadily loses fps until it locks at about 5-10fps, then the buffer slowly starts to grow to about a thousand and the client automatically disconnects

- we have tried hosting the game the way around (client-host switch)
- we both have strong rigs
- we both have good internet (100mbit/1gigabit)
- tried moving it to a dedicated server, this made it even worse

Steps to reproduce:
- Have someone else host
- Join as a client
- Wait about 30 seconds

Reports:

factorio-perf-20028_20250120-210937_D3D11_12th_Gen_i5-12600KF~32GB~RTX_4080_SUPER~16047MB.csv

(233.51 KiB) Downloaded 16 times

factorio-perf-20028_20250120-210934_D3D11_Ryzen7_3700X_8-~32GB~RX_7900_XT~20396MB.csv

(233.84 KiB) Downloaded 16 times

Savegame:

ToTheStars.zip

(84.09 MiB) Downloaded 18 times

Screenshot:

Screenshot 2025-01-20 211000.png (1.73 MiB) Viewed 219 times

It may be the same problem as described in this report viewtopic.php?f=49&t=124641&p=653459&hilit=lag but iam not sure

[Rseding91]

You've built beyond what can be sustained at 60 UPS and the overhead of adding multiplayer causes the connecting players to fail to keep up with the server. You can reduce game speed so connecting players can keep up, or remove some of what you've built to reduce the time it takes to run the map.

Game speed can be reduced with:

Code: Select all

/c game.speed = 0.9

which will cause it to run at 90% the normal speed.