Factorio Forums

Platform tested on: macOS 10.14.5
Version tested: 0.17.54 standalone

This screenshot pretty much says it all..


Having seen nothing in the changelog that suggests FPS should be unlocked from 60, I thought I should report this as a bug until informed otherwise.

I am running some bot layout/throughput tests. I set /c game.speed = 25 before starting. In version 0.17.53 (and all before), this would result in me getting 850-1000 UPS, with FPS of course locked at 60.

I just upgraded to 0.17.54, started another of my tests, and was amazed to see:

• That UPS was now locking to 120 when game.speed was >=2
• That my overall UPS is way down. Instead of 850-1000, I am maxing out at 350-400. I assume this is from the extra work of drawing twice as many frames.

Log file attached.

Is v-sync turned on or off?

Klonan wrote: Thu Jul 04, 2019 1:15 pm Is v-sync turned on or off?

It was off and ah yes, turning it on has restored me to 60 FPS and expected levels of UPS (~1000 at the moment).

However before 0.54, it was 60 with it both on and off. Expected change?

That's how it is expected to work. I was not aware it didn't work that way on macOS.

The change was - I reverted workaround SDL had for broken v-sync in macOS 10.14.3, because it's fixed on macOS 10.14.4 and therefore the workaround was present only in developer versions of SDL anyway. I didn't know it limited framerate even with vsync turned off.

posila wrote: Thu Jul 04, 2019 1:24 pm That's how it is expected to work. I was not aware it didn't work that way on macOS.

The change was - I reverted workaround SDL had for broken v-sync in macOS 10.14.3, because it's fixed on macOS 10.14.4 and therefore the workaround was present only in developer versions of SDL anyway. I didn't know it limited framerate even with vsync turned off.

Ahh, thanks for the explanation. Glad all is working as intended now.