kovarex wrote:The time is spent in flip. Do you play with v-sync enabled? What if you toggle it?

I had v-sync enabled, I have now disabled it and I will let you know if/when it occurs again

Unfortunately not fixed (this is 0.15.12), I took some screenshots where the FPS/UPS would just drop to 40 or so FPS for no apparent reason, even happened while standing still.

(videocard is GTX1080 with 8GB vram and CPU is a i7 2600k and 16GB RAM)

I have just upgraded to 0.15.11 and I will see if the issue still occurs, if it does, I'll let you know.

edit: After a few hours of playing, so far it hasn't (with 'create specialized sprite atlases' enabled)

I have noticed the lag spikes too in 0.15.10 and I've never had them ever before in hundreds of hours played in prior versions. My videocard is a GTX1080 and I have the video settings turned all the way up (at 1440p) I should hope 8 GB GDDR5X is enough VRAM for Factorio :) Edit: To clarify, my lagsp...