Client FPS/UPS drops until unplayable

[Llama]

On a LAN game the host can play the game just fine at ~60 FPS/UPS, but the client drops down to 5 FPS/UPS where he becomes completely paralyzed and cannot move. The game is literally unplayable.

I've attached images of some debug info, can anyone help me understand the numbers? I've also attached the map so you can see it's not a gigafactory. The PC can play a bunch of nice looking 3D games, and even horribly optimised CPU-dependent games like Civ:V, but it rolls over and dies even when I stand in the middle of nowhere, zoomed into the dirt with smoke turned off.

Factorio 0.14.20
Win10 64
AMD FX-4100 CPU @ 4.4GHz (using about 30%)
4GB DDR3 (using about 50-60%)
HDD
AMD Radeon 4670 (34% load, 328MB memory usage)

No supercompter, but I can't believe it's literally unable to draw a few sprites a few times a second! It works okay in singleplayer, 50-55 FPS in singleplayer, but locks up in multiplayer.

[posila]

On a LAN game the host can play the game just fine at ~60 FPS/UPS
...
It works okay in singleplayer, 50-55 FPS in singleplayer, but locks up in multiplayer.

That's the problem. Client is not able to keep up with server. There is some issue with UPS counter, but client tries to keep up with the server, dropping frames to 5 FPS. You can do console command

Code: Select all

/c game.speed = 0.8

That will bring simulation down to 48 UPS and client should be able to keep up with server.

Or host the game on the slower computer.

[Llama]

Thanks, I'll give that a go. Does the debug info hint at where I can optimise the world, whether it's graphics like trees or smoke, too many biters, belts, bots, trains, land in memory etc?

[Rseding91]

Thanks, I'll give that a go. Does the debug info hint at where I can optimise the world, whether it's graphics like trees or smoke, too many biters, belts, bots, trains, land in memory etc?

It's never 1 thing. It's just too much everything.