Things done during pre-prepare:

* Poll events from the operating system (keys pressed, mouse movement) - typically takes zero time
* Process steam callbacks (join game requests) - typically takes zero time
* Update in-progress downloads - typically takes zero time (and downloads don't happen ...

Rseding91 wrote: Tue Aug 05, 2025 12:04 am Can you post the log file?

Hello, I didn't see there was a quote reply option and replied on my own post with the log.
While I was doing that, the dip in UPS happened again, which I was able to capture on this image:

Shown on the image above, the "Pre-prepare" metric will sometimes take up to 190 ish ms to process, lowering the game's UPS intermittently to ~48.


I see a max of 7ms? Up to 17ms for prepare.

(Speculation, but I'm curious if that's from chart refresh, which is occasionally 16ms but not ...

Shown on the image above, the "Pre-prepare" metric will sometimes take up to 190 ish ms to process, lowering the game's UPS intermittently to ~48.


I see a max of 7ms? Up to 17ms for prepare.

(Speculation, but I'm curious if that's from chart refresh, which is occasionally 16ms but not ...

Hello, I believe this is the log, this is the factorio-current.log file.
I couldn't figure out how to post a .txt file, so I copied everything. If there's a better way, please let me know.

0.000 2025-08-04 16:08:18; Factorio 2.0.60 (build 83512, win64, steam, space-age)
0.000 Operating system ...

https://imgur.com/a/Ujlr2NB
Shown on the image above, the "Pre-prepare" metric will sometimes take up to 190 ish ms to process, lowering the game's UPS intermittently to ~48.
I tried looking at the performance metric using task manager and nothing seems to be overutilized, with the overall average ...