I have done it in my reply in this topic which was split into another issue.berggen wrote: Sun Jun 28, 2026 12:56 pm Would it make sense to run some tests in 2.0 compared to 2.1 to see how close biters are getting to the player in 5 hours of idle or something? I don't know if the Factorio team makes it easier to set up this sort of automated harness, but I could probably do a headless one. Maybe just create a new world and measure how long it takes for biters to kill the engineer due to expansion?