Factorio Forums

Occasionally during multiplayer, drag-placing big power poles will dramatically reduce UPS. It tends to work fine for the first few poles, then slow down for various reasons.

Likely causes are collision with the player or attempted placement/connectivity with approaching other poles. Either way it seems related to uncertainty about player position with latency.

Since you guys managed to fix the deconstructing-and-walking-on belt latency issue maybe this is fixable too?

I'm not able to reproduce this when I test.

Can you reproduce it? Do you have steps or something?

Also enable the time stats debug option next time it happens and take a screenshot of that.

Apparently other people I play with can't cause it. It starts out okay, then falls behind gradually. Multiplayer waiting statistics on my end go from 1 to around ~7 for a peer, but 20->100-> stable at 170 on me from their perspective.

They feel the slowdown equivalent to my visible UPS, even though the statistics show Multiplayer UPS at 60.

It happens as both server and client.

The progression is attached, apparently in reverse order... good last, then bad, then the ugly at the top.

Can you upload the save file you're using so I can test it locally?

I made some improvements but I want to know how they impact performance when run on your save file.

Sure thing. I should have noted additionally that the performance hit if existent is not noticeable in single-player, and it also does not require walking. It's simply click-dragging (trying to auto-place).

It looks to be about 4x faster when I test it locally.

I wasn't able to get such extreme numbers you're seeing so you'll have to let me know when 0.13.10 is out how it performs.

What's your latency setting on?

It was on the default 250 at the time.